小升初数学复习重点

小升初数学复习重点 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 1、体积和表面积 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 三角形的面积,底×高?2。 公式 S= a×h?2 正方形的面积,边长×边长 公式 S= a2 长方形的面积,长×宽 公式 S= a×b 平行四边形的面积,底×高 公式 S= a×h 梯形的面积,(上底+下底)×高?2 公式 S=(a+b)h?2 内角和:三角形的内角和,180度。 长方体的表面积,(长×宽，长×高，宽×高 ) ×2 公式:S=(a×b+a×c+b×c)×2 正方体的表面积,棱长×棱长×6 公式: S=6a2 长方体的体积,长×宽×高 公式:V = abh 长方体(或正方体)的体积,底面积×高 公式:V = abh 正方体的体积,棱长×棱长×棱长 公式:V = a3 圆的周长,直径×π 公式:L,πd,2πr 圆的面积,半径×半径×π 公式:S,πr2 圆柱的表(侧)面积:圆柱的表(侧)面积等于底面的周长乘高。公式:S=ch=πdh,2πrh 圆柱的表面积:圆柱的表面积等于底面的周长乘高再加上两头的圆的面积。 公式:S=ch+2s=ch+2πr2 圆柱的体积:圆柱的体积等于底面积乘高。公式:V=Sh 圆锥的体积,1/3底面×积高。公式:V=1/3Sh side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 2、算术 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 1、加法交换律:两数相加交换加数的位置，和不变。 2、加法结合律:a + b = b + a 3、乘法交换律:a × b = b × a 4、乘法结合律:a × b × c = a ×(b × c) 5、乘法分配律:a × b + a × c = a × b + c 6、除法的性质:a ? b ? c = a ?(b × c) 7、除法的性质:在除法里，被除数和除数同时扩大(或缩小)相同的倍数，商不变。 0除以任何不是0的数都得0。 简便乘法:被乘数、乘数末尾有0的乘法，可以先把0前面的相乘，零不参加运算，有几个零都落下，添在积的末尾。 8、有余数的除法: 被除数,商×除数+余数 方程、代数与等式 等式:等号左边的数值与等号右边的数值相等的式子叫做等式。 等式的基本性质:等式两边同时乘以(或除以)一个相同的数，等式仍然成立。 方程式:含有未知数的等式叫方程式。 一元一次方程式:含有一个未知数，并且未知数的次 数是一次的等式叫做一元一次方程式。学会一元一次方程式的例法及计算。即例出代有χ的算式并计算。 代数: 代数就是用字母代替数。 代数式:用字母表示的式子叫做代数式。如:3x =ab+c side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 3、分数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 分数: 把单位“1”平均分成若干份，表示这样的一份或几分的数,叫做分数。 分数大小的比较: 同分母的分数相比较，分子大的大，分子小的小。异分母的分数相比较，先通分然后再比较;若分子相同，分母大的反而小。 分数的加减法则: 同分母的分数相加减，只把分子相加减，分母不变。异分母的分数相加减，先通分，然后再加减。 分数乘整数: 用分数的分子和整数相乘的积作分子，分母不变。 分数乘分数: 用分子相乘的积作分子，分母相乘的积作为分母。 分数的加、减法则: 同分母的分数相加减，只把分子相加减，分母不变。异分母的分数相加减，先通分，然后再加减。 倒数的概念: 1.如果两个数乘积是1，我们称一个是另一个的倒数。这两个数互为倒数。1的倒数是1，0没有倒数。 分数除法: 分数除以整数(0除外)，等于分数乘以这个整数的倒数。 分数的基本性质: side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 分数的分子和分母同时乘以或除以同一个数(0除外)，分数的大小 分数的除法则: 除以一个数(0除外)，等于乘这个数的倒数。 真分数: 分子比分母小的分数叫做真分数。 假分数: 分子比分母大或者分子和分母相等的分数叫做假分数。假分数大于或等于1。 带分数: 把假分数写成整数和真分数的形式，叫做带分数。 分数的基本性质: 分数的分子和分母同时乘以或除以同一个数(0除外)，分数的大小不变。 利润 利息,本金×利率×时间(时间一般以年或月为单位，应与利率的单位相对应) 利率: 利息与本金的比值叫做利率。 一年的利息与本金的比值叫做年利率。 一月的利息与本金的比值叫做月利率。 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 4、比 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 什么叫比: 两个数相除就叫做两个数的比。 如:2?5或3:6 比的前项和后项同时乘以或除以一个相同的数(0除外)，比值不变。 什么叫比例: 表示两个比相等的式子叫做比例。如3:6,9:18 比例的基本性质: 在比例里，两外项之积等于两内项之积。 解比例: 求比例中的未知项，叫做解比例。如3:χ,9:18 正比例: 两种相关联的量，一种量变化，另一种量也随着化，如果这两种量中相对应的的比值(也就是商k)一定，这两种量就叫做成正比例的量，它们的关系就叫做正比例关系。 反比例: 两种相关联的量，一种量变化，另一种量也随着变化，如果这两种量中相对应的两个数的积一定，这两种量就叫做成反比例的量，它们的关系就叫做反比例关系。 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 5、百分数 百分数: side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 表示一个数是另一个数的百分之几的数，叫做百分数。百分数也叫做百分率或百分比。 把小数化成百分数: 只要把小数点向右移动两位，同时在后面添上百分号。 把小数化成百分数: 只要把这个小数乘以100,就行了。 把百分数化成小数: 只要把百分号去掉，同时把小数点向左移动两位。 把分数化成百分数: 通常先把分数化成小数(除不尽时，通常保留三位小数)，再把小数化成百分数。其实，把分数化成百分数，要先把分数化成小数后，再乘以100,就行了。 把百分数化成分数: 先把百分数改写成分母是100的分数，能约分的要约成最简分数。 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 6、倍数与约数 最大公约数: side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 几个数公有的约数，叫做这几个数的公约数。公因数有有限个。其中最大的一个叫做这几个数的最大公约数。 最小公倍数: 几个数公有的倍数，叫做这几个数的公倍数。公倍数有无限个。其中最小的一个叫做这几个数的最小公倍数。 互质数: 公约数只有1的两个数，叫做互质数。相临的两个数一定互质。两个连续奇数一定互质。1和任何数互质。 通分: 把异分母分数的分别化成和原来分数相等的同分母的分数，叫做通分。(通分用最小公倍数) 约分: 把一个分数的分子、分母同时除以公约数，分数值不变，这个过程叫约分。 最简分数: 分子、分母是互质数的分数，叫做最简分数。分数计算到最后，得数必须化成最简分数。 质数(素数): 一个数，如果只有1和它本身两个约数，这样的数叫做质数(或素数)。 合数: side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 一个数，如果除了1和它本身还有别的约数，这样的数叫做合数。1不是质数，也不是合数。 质因数: 如果一个质数是某个数的因数，那么这个质数就是这个数的质因数。 分解质因数: 把一个合数用质因数相成的方式表示出来叫做分解质因数。 倍数特征: 2的倍数的特征: 各位是0，2，4，6，8。 3(或9)的倍数的特征: 各个数位上的数之和是3(或9)的倍数。 5的倍数的特征: 各位是0，5。 4(或25)的倍数的特征: 末2位是4(或25)的倍数。 8(或125)的倍数的特征: 末3位是8(或125)的倍数。 7(11或13)的倍数的特征: 末3位与其余各位之差(大-小)是7(11或13)的倍数。 17(或59)的倍数的特征: 末3位与其余各位3倍之差(大-小)是17(或59)的倍数。 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 19(或53)的倍数的特征: 末3位与其余各位7倍之差(大-小)是19(或53)的倍数。 23(或29)的倍数的特征: 末4位与其余各位5倍之差(大-小)是23(或29)的倍数。 有倍数关系的两个数: 最大公约数为较小数，最小公倍数为较大数。 互质关系的两个数: 最大公约数为1，最小公倍数为乘积。 两个数分别除以他们的最大公约数，所得商互质。 两个数的与最小公倍数的乘积等于这两个数的乘积。 两个数的公约数一定是这两个数最大公约数的约数。 1既不是质数也不是合数。 用6去除大于3的质数，结果一定是1或5。 奇数与偶数 偶数: 个位是0，2，4，6，8的数。 奇数: 个位不是0，2，4，6，8的数。 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 偶数+偶数,偶数 奇数+奇数,奇数 奇数+偶数,奇数 偶数×偶数,偶数 奇数×奇数,奇数 奇数×偶数,偶数 相临两个自然数之和为奇数，相临自然数之积为偶数。 如果乘式中有一个数为偶数，那么乘积一定是偶数。 奇数?偶数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 7、小数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 自然数: 用来表示物体个数的整数，叫做自然数。0也是自然数。 纯小数: 个位是0的小数。 带小数: 各位大于0的小数。 循环小数: 一个小数，从小数部分的某一位起，一个数字或几个数字依次不断的重复出现，这样的小数叫做循环小数。如3. 141414 不循环小数: 一个小数，从小数部分起，没有一个数字或几个数字依次不断的重复出现，这样的小数叫做不循环小数。如3. 141592654 无限循环小数: 一个小数，从小数部分到无限位数，一个数字或几个数字依次不断的重复出现，这样的小数叫做无限循环小数。如3. 141414…… 无限不循环小数: 一个小数，从小数部分起到无限位数，没有一个数字或几个数字依次不断的重复出现，这样的小数叫做无限不循环小数。如3. 141592654…… side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 8、体积和表面积 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 三角形的面积,底×高?2。 公式 S= a×h?2 正方形的面积,边长×边长 公式 S= a2 长方形的面积,长×宽 公式 S= a×b 平行四边形的面积,底×高 公式 S= a×h 梯形的面积,(上底+下底)×高?2 公式 S=(a+b)h?2 内角和:三角形的内角和,180度。 长方体的表面积,(长×宽，长×高，宽×高 ) ×2 公式:S=(a×b+a×c+b×c)×2 正方体的表面积,棱长×棱长×6 公式: S=6a2 长方体的体积,长×宽×高 公式:V = abh 长方体(或正方体)的体积,底面积×高 公式:V = abh 正方体的体积,棱长×棱长×棱长 公式:V = a3 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 圆的周长,直径×π 公式: L,πd,2πr 圆的面积,半径×半径×π 公式: S,πr2 圆柱的表(侧)面积:圆柱的表(侧)面积等于底面的周长乘高。公式:S=ch=πdh,2πrh 圆柱的表面积:圆柱的表面积等于底面的周长乘高再加上两头的圆的面积。 公式:S=ch+2s=ch+2πr2 圆柱的体积:圆柱的体积等于底面积乘高。 公式:V=Sh 圆锥的体积,1/3底面×积高。 公式:V=1/3Sh side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 长度单位换算: 1千米=1000米 1米=10分米 1分米=10厘米 1米=100厘米 1厘米=10毫米 面积单位换算 1平方千米=100公顷 1公顷=10000平方米 1平方米=100平方分米 1平方分米=100平方厘米 1平方厘米=100平方毫米 体(容)积单位换算 1立方米=1000立方分米 1立方分米=1000立方厘米 1立方分米=1升 1立方厘米=1毫升 1立方米=1000升 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 重量单位换算 1吨=1000千克 1千克=1000克 1千克=1公斤 人民币单位换算 1元=10角 1角=10分 1元=100分 时间单位换算 1世纪=100年 1年=12月 大月(31天)有:1\3\5\7\8\10\12月 小月(30天)的有:4\6\9\11月 平年2月28天, 闰年2月29天 平年全年365天, 闰年全年366天 1日=24小时 1时=60分 1分=60秒 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 1时=3600秒 公式: 1 每份数×份数,总数 总数?每份数,份数 总数?份数,每份数 2 1倍数×倍数,几倍数 几倍数?1倍数,倍数 几倍数?倍数,1倍数 3 速度×时间,路程 路程?速度,时间 路程?时间,速度 4 单价×数量,总价 总价?单价,数量 总价?数量,单价 5 工作效率×工作时间,工作总量 工作总量?工作效率,工作时间 工作总量?工作时间,工作效率 6 加数，加数,和 和—一个加数,另一个加数 7 被减数,减数,差 被减数,差,减数 差，减数,被减数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 8 因数×因数,积 积?一个因数,另一个因数 9被除数?除数,商 被除数?商,除数 商×除数,被除数 10总数?总份数,平均数 和差问题的公式:(和，差)?2,大数 (和,差)?2,小数 和倍问题的公式:和?(倍数,1),小数 小数×倍数,大数 和,小数,大数 差倍问题的公式:差?(倍数,1),小数 小数×倍数,大数 小数，差,大数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 解决问题 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 植树问题: 非封闭线路上的植树问题主要可分为以下三种情形: ?如果在非封闭线路的两端都要植树,那么: 株数,段数，1,全长?株距,1 全长,株距×(株数,1) 株距,全长?(株数,1) ?如果在非封闭线路的一端要植树,另一端不要植树,那么: 株数,段数,全长?株距 全长,株距×株数 株距,全长?株数 ?如果在非封闭线路的两端都不要植树,那么: 株数,段数,1,全长?株距,1 全长,株距×(株数，1) 株距,全长?(株数，1) 2.封闭线路上的植树问题的数量关系如下: 株数,段数,全长?株距 全长,株距×株数 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 株距,全长?株数 盈亏问题 利润问题 (盈，亏)?两次分配量之差=参加分配的份数 利润=售出价,成本价(进价) (大盈,小盈)?两次分配量之差,参加分配的份数 (大亏,小亏)?两次分配量之差,参加分配的份数 相遇问题 追及问题 相遇路程,速度和×相遇时间 追及距离,速度差×追及时间 相遇时间,相遇路程?速度和 追及时间,追及距离?速度差 速度和,相遇路程?相遇时间 速度差,追及距离?追及时间 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations 流水问题 流速度,静水速度，水流速度 逆流速度,静水速度,水流速度 静水速度,(顺流速度，逆流速度)?2 水流速度,(顺流速度,逆流速度)?2 side of road subgrade 2m. Direct-buried cable upper and lower should be covered with not less than 100mm thick layer of soft soil or sand, and affix the protection, the coverage should be wider than 50mm on each side of the cable, cover plate can be used to protect concrete or brick. Direct-buried cable in line every 50-100 meters, cable turns should be appreciable bearing flags or stakes. Direct-buried cable prior to backfill, shall be subject to acceptance of concealed work before they can be filled. 4.1.5 4.1.5.1 factory of making cable terminal cable mainly in the low-voltage cable head, dry Pack, its production should strictly abide by the production process. 4.1.5.2 should check the insulation before the first cable production qualified, low-voltage power cables with 1000V shake table, its insulation value should not be less than the specified value. 4.1.5.3 making cable head, cut from the Strip begins continuous operation until the completion of the cable, reducing insulation exposure time, strip-cut cables, insulation should not damage conductors and reservations. The armored power cable and control cable shield should be connected to a good shall not be interrupted, and ... Correctly positioned, vertical clearance shall be distributed evenly per shell bus and the shell should be concentric, the error shall not exceed 5mm, segments and segment connection, two adjacent bus and enclosure, after connecting bus and enclosure should not be subject to mechanical stress. Short circuit between phases of the shell plate is correctly positioned, good connection between support plates shall be mounted firmly, insulation Grade insulation shell should be made. 4.1.11 the installation of explosion-proof electrical equipment 4.1.11.1 rectisol wash unit area, tank farm and other explosion-proof areas, the electrical installation shall be carried out as explosion-proof requirements. 4.1.11.2 electrical installations