计算机基础试题及答案

计算机基础试题及答案 计算机基础试题及答案一、填空题1.第一台电子计算机是1946年在美国研制成功的，该机的英文缩写名是Eniac 2. 1KB=1024B;1MB=1024×1024B。 3.CPU内包含有运算器和控制器两部分。 4. 字长是计算机一次能处理的二进制位数。 5. Bit的意思是位。 6.Windows xp系统是一个多用户、多任务的操作系统。 7.和我的电脑一样，通过资源管理器可以管理文件和文件夹以及整个计算机的系统。 8.在 Windows XP 中，复制文件(夹)操作的快捷键是Ctrl+C。 9. 完整的磁盘文件名由文件名和扩展名组成。 10.当打开word后，默认的文件名是文档1。 11.在Word文档中，三号字比四号字大。 12. Word中，默认的纸张大小是A4。 13.在Word中，段落标记是在按Enter键后得到的。 14在Word中，如果要对文本进行“字符”格式化设置，首先必须选中文本。 15.Word中，利用快捷键Ctrl+A可以选择整个文档。 16.在Word中，如果选择整篇文档，可以按ctrl+A 组合键实现。 17.在Excel中输入文字时，默认对齐方式是:汉字和英文在单元格内靠左对齐,数字、日期/时间型靠右对齐。 18.Excel工作簿由工作表组成。 19.在Excel的工作表中行标号是用数字表示的，列标号是用字母表示的。一个工作薄默认情况下有3个工作表。 20.Excel中，要显示当前时间的快捷键是Ctrl+Shift+:;要显示当前日期的快捷键是Ctrl+:。 21.在Excel中，被选中的单元格称为活动单元格。 22.Excel中，在输入公式时，必须以,作为开始。 23.按Ctrl+End键可以把插入点移到文档尾部。 24.在Excel中除了直接在单元格中编辑内容外，还可以使用编辑进行编辑。 25.存储器容量的基本单位是Byte。 26.在Word中要复制已选定的文本，可以按下ctrl+c键，同时用鼠标托动选定文本到指定位置。 27，用Ctrl+Shift键，可以在各种中文输入法之间的切换。 28，Windows中可以使用长达255个字符的文件名。 samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method 29，假定单元格D3中保存的公式为“,B3+C3”，若把它复制到E4中，则E4中保存的公式为,C4，D4。 30.Powerpoint 中从当时幻灯片放映的快捷键是____________。 31.在Powerpoint 中如要终止幻灯片的放映，可直接按____________ 键。 二、选择题(后十题为多选题) 1. CPU的中文名字是(C)。 A、裸机 B、微型计算机 C、中央处理单元 D、控制单元 2.计算机的存储系统一般指主存储器和(b)。 A、累加器 B、辅助存储器 C、寄存器 D、鼠标器 3.下列四组数应依次为二进制、八进制和十六进制，符合这个要求的是(D)。 A:11，78，19 B:13，77，10 C:12，80，10 D:11，77，19 4. 计算机与一般计算装置的本质区别是它具有(b)。 A、程序控制功能 B、存储程序和程序控制功能 C、自动控制功能 D、大容量和高速度 5.下列存储器中，存取速度最慢的是(a)。 A. 软盘 B(硬盘 C光盘 D( 内存 6.删除当前输入的错误字符，可直接按下(c)。 A、Enter键 B、ESC键 C、BackSpace键 D、Shift键 7.Internet使用的主要 协议 离婚协议模板下载合伙人协议 下载渠道分销协议免费下载敬业协议下载授课协议下载 是 b? A(ATM B(TCP,IP C(X(25 D( PPP 8.“任务栏”上显示的图标，表示 a( A. 正在运行的程序 B(硬盘中的程序 C. 软盘中的程序 D(光盘中的程序 9.用来表示计算机辅助教学的英文缩写是a。 A.CAI B.CAM C.CAD D.CAT 10. 计算机中的所有信息都是以二进制方式表示的，主要理由是c。 A.运算速度快 B.节约元件 C.所需的物理元件最简单 D.信息处理方便 11.微型计算机的性能指标主要取决于( c)。 A. RAM B(显示器 C( CPU D(硬盘 12.第一台电子计算机是(c)年在美国宾夕法尼亚大学诞生的电子数值积分计算机(ENIAC)。 A、1945 B、1947 C、1946 D、1964 13.计算机病毒产生的原因是(d)。 A(生物病毒传染 B(硬件性能变化 C.电磁干扰 D(人为因素 14.Windows中，若要一次选择不连续的几个文件或文件夹，正确的操作是(D)。 A、按住Shift键，单击首尾文件 B、单击第一个文件，然后按住Shift键单击最后一个文件 C、单击“编辑”菜单的“全部选定” samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method D、单击第一个文件，然后按住Ctrl键单击要选择的多个文件 15.当Windows的任务栏在桌面屏幕的底部时，其右端的"指示器"显示的是(d)。 A:"开始"按钮 B:用于多个应用程序之间切换的图标 C:快速启动工具栏 D:网络连接状态图标、时钟等 16.Windows菜单操作中，如果某个菜单项的颜色暗淡，则表示(d)。 A:只要双击，就能选中 B:必须连续三击，才能选中 C:单击被选中后，还会显示出一个方框要求操作者进一步输入信息 D:在当前情况下，这项选择是没有意义的，选中它不会有任何反应 17.在中文Windows环境下，由汉字输入状态快速进入英文输入状态，可用(d)。 A、Shift键+空格键 B、Enter键+空格键 C、 Alt键+空格键 D、Ctrl键+空格键 18.“开始”菜单上的有些项目带有(a)，表示还有下一级菜单。 A、向右的箭头 B、向下的箭头 C、向左的箭头 D、向上的箭头 19.在Word中，创建表格不应该使用的 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 是(a)。 A:用绘图工具画一个 B:使用工具栏按钮创建 C:使用菜单命令创建 D:使用"表格和边框"工具栏绘制表格 20.在 Word 的文件存盘操作中，“另存为”是指(d)。 A(退出编辑，但不退出Word，不能改变文件名和保存的位置 B(退出编辑，退出Word系统，不能改变文件名和保存的位置 C(不退出编辑，退出Word系统，可以改变文件名或保存位置 D(不退出编辑，可以改变文件名或保存位置 21.在对Word文档进行编辑时，如果操作错误，则(b)。 A.无法纠正 B(单击‘撤消’ C.单击‘自动更正’ D(只能手工修改 22.在Word编辑文档时，每个段落结束处有一个段落标记，它是通过(a)得到的( A(按回车键(Enter) B.按空格键 C.按End键 D(输入句号 23.在Excel的常规显示格式下，要使某单元格显示0.5，可用(c)表达式。 A(3/6 B("3/6" C(=3/6 D(="3/6" 24.在Excel中，求一组数值中的最大值和平均值函数为(d)。 A:MAX和SUM B:MAX和COUNT C:MIN和MAX D:MAX和AVERAGE 25.游览Internet上的网页，需要知道(C)。 A、网页的设计原则 B、网页制作的过程 C、网页的地址 D、网页的作者 26.计算机病毒的感染途径有很多，主要有(abc)。 A(网络传输 B(随便使用他人的移动存储 C(使用非法盗版软件 D(利用计算机休眠功能 27计算机软件可分为(ab)。 A、系统软件 B、应用软件 C、计算机语言 D、程序 28.(abd)是Windows XP桌面上固有的图标。 samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method A(我的电脑 B(我的文档 C(Word D(回收站 29.对Word文档中插入的图片可进行操作(abd)。 A移动图片 B改变图片尺寸C设置图片为水印效果 D设置图片的方式 30.在Word 2007中包含以下哪几种视图(abcd)。 A. 普通视图 B. 大纲视图 C. Web版式视图 D. 页面视图 31.在Word 2007中，要修改页眉页脚可以通过哪些方法,(ad)。 A. 激活页眉或页脚后，单击"页眉和页脚"的"设计"和“布局”选项卡。 B. 在"格式"菜单的"样式"命令中设置 C. 单击"文件"菜单中的"页面设置"命令 D. 直接双击页眉页脚位置 32.在Word中，能(abcd)。 A、绘制表格 B、插入表格 C、表格变文本 D、插入图片 33.在EXCEL 中，对工作表的行可进行(abd)。 A 选定 B 插入 C 整理 D 删除 34.Excel 对单元格引用方式有(abcd)。 A(绝对引用 B(相对引用 C(混合引用 D(交叉引用 35.在EXCEL 中，可对数据进行(Abcd)操作。 A筛选 B 排序 C 分类汇总 D数据透 三、判断题 (×)1.在计算机中，字和字节的含义是一样的。 (×)2.微型计算机中的“奔3”(PIII)或“奔4”(PIV)指的是内存的型号。 (?)3.微型计算机也称为个人计算机，简称微机，俗称电脑。 (?)4.灰色命令项表示当前条件下该命令不能被执行。 (×)5.Windows的任务栏只能放在桌面的下部 (?) 6.CD-ROM是只读光盘。 (?)7.Windows中“画图”文件默认的扩展名是“.BMP”。 (×)8.当一个应用程序窗口被最小化后，该应用程序将被暂停执行。 (×)9.在Windows XP资源管理器中，【编辑】菜单项中的“剪切”命令只能剪切文件夹。 (?)10.在WINDOWS用户可以同时打开多个窗口，此时，只有一个窗口处于激活状态，它的标题栏的颜色与众不同。 (?)11.Word中，将“替换为”文本框留空可以删除查找的内容。 (×)12、保存Word文档不能与关闭文档同时进行。 (×)13.Word中可以把文字转换成表格，但不能把表格转换成文字。 (?)14.Word的"页面设置"中能够设置页边距、纸张类型。 (?)15.在word 2003中打不开以word2007格式保存的文档。 (×)16、Ctrl+Z不仅可以恢复不当的删除，而且可以恢复所有不当的操作。 (×)17.在EXCEL启动后打开了一个工作簿，默认的文件名“工作簿1”。 samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method (?)18.SHEET1表示工作表名称。 (?)19.Excel的排序,既可以按行进行,也可以按列进行 (×)20.在Excel中筛选时，必须要先排序。 (×)21.在Windows中，如果想同时改变窗口的高度和宽度，可以通过拖放滚动条实现。 (×)22.计算机的硬件系统由控制器、显示器、打印机、主机、键盘组成。 (?)23.打印机是一种输出设备。 (×)24.在Windows XP的“资源管理器”同一驱动器中的同一目录中，允许文件重名。 (?)25.在windows下，当前窗口仅有一个。 四、简单题、操作描述题 1、在Excel的单元格中出现“#######”是什么意思,(5分) 2、课程表的操作步骤。 3、写出在Excel中，简单描述出下表中标题的合并居中，总分和平均分的操作方法。(8分) 学生成绩表 姓名 数学 英语 计算机 政治 总分 平均分 张强 92 84 95 68 李五 90 76 82 80 王申 94 80 88 76 赵红 85 94 88 78 钱线 87 78 79 74 欧阳奋强 96 82 97 70 郑小花 84 70 79 81 4、在工作表Sheet1中输入如下所示文字及数据，将工作表标签 Sheet1改名为“销售表”;设置Sheet1中数据单元格的行高为18，宽为14;分别计算机、打印机、扫描仪各类产品的销售总值。(8分) 销量表 销售地 计算机 打印机 扫描仪 丹麦 3617 5569 5961 法国 1474 3768 4598 德国 2312 5905 1222 意大利 7243 4588 4988 荷兰 8661 1336 9331 总计 5.根据下图的内容显示，请写出都应用了哪些word文档的知识点。 1、因为该列的列宽不够，才会出现这现符号，只要调整列宽就可以正常显示数据。 2、(1)插入艺术字“课程表”—单击“插入”选项卡“文本”组中“艺术字”按钮，调整艺术字的“形状”及修饰艺术字。 (2)使作“插入”选项卡“表格”组中的“表格”按钮插入9行7列的表格。 samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method (3)再利用“布局”选项卡“表”组的“绘制斜线表头”按钮，绘制斜线。“合并”组中“合并单元格”按钮合并单元格。(4)输入文本内容，调整字体大小。 (5)设置表格边框线。 3.(1)标题的合并及居中:选择第一行的第一列到第七列，“开始”选项卡里的“合并并居中”。 (2)求总分:选定张强行，总分列的单元格，数据”选项卡中的“自动求和”按钮。确定计算区域后，按回车。用填充柄的方式向下侧的单元格进行复制。 (3)求平均分:选定张强行，平均分列的单元格，数据”选项卡中的“自动求和”按钮下的“平均值”，重新调整计算区域后，按回车。用填充柄的方式向下侧的单元格进行复制。 4.(1)工作表的重命名:在工作表名处右击，选择“重命名”，输入“销售表”即可。 (2)行高、列宽:分别选择对应的行(或列)，右击“行高”(或“列宽”)，输入对应数据即可。 (3)销售总值:先定位光标到轻工列，总计行交叉的单元格。“数据”选项卡中的“自动求和”按钮。确定计算区域后，按回车。用填充柄的方式向右侧两个单元格复制。 6.2 定位光标到第一段第一个文本前，按回车，回到第一行，输入标题文本“电脑病毒”，并在“开始”选项卡中设置字体为:红色初号，黑 斜体，居中。打开“段落”对话框设置:段前段后一行间距。选中文第一段文本，用鼠标拖动到文档最后。打开“查找和替换”对话框的“替换”选项卡，在“查找内容”中输入“电脑”，“替换为”中“计算机”，单击“全部替换”按钮，关闭对话框。选择全部正文，打“段落”对话框，设置段前0.5行间距，段后0.5行间距。行间距段中选择1.5倍行距。定位光标到“有一则笑话„„„”段，“插入”选项卡“文本”组中的“首字下沉”命令，打开对话框设置设置下沉，行数:两行。选择“有人说„„„”一段，“页面布局”选项卡，“页面设置”组中的“分栏”列表框中选择两栏即可。 samples if possible first enters the processing ... Sterilization containers: from plastic bags to sterilized gallon paint bucket, can be used to have a sharp edge products such as crab, shrimp, and so on. Sampling tools: sampling tool including: a teaspoon, spoon, needle-nosed pliers, angle fovceps tongs beakers and beaker, tool type is generally decided by the sample products. All sampling and date of sterilization of the container should be checked and sterilization time should be indicated on the label and packaging of equipment facilities, some facilities can be purchased at a local laboratory sterilization or disinfection equipment, laboratory and sterilization of instruments and facilities can be kept on the ground for at least two months, expired facilities must be sterilized again. Sterile gloves: sterile gloves must not be enabled in a sample, if a product is in the process of sample collection must be contacted to do it's best to let the factory production line workers (workers processed products), in the sample into a collection container, since the workers in the production process to reach the product, so we cannot think of their products and have the additional pollution. When the gloves must be a way to avoid contamination, wear, gloves must be fit to work needs. No bacteria cotton swab child: General for swab take instrument facilities and factory environment regional, using cotton swab child General has a right of program, open cotton swab child stripping off epidermal, then must carefully of put in tube head Shang, note don't contaminated cotton swab childliquid to dissolve in liquid. Often referred to as solvent of liquid components in the solution ...AVolume of water solution. 6. the titre (t) titer is the solution concentration is another method. It has two meanings, said on its per milliliter of solution of solute in grams or milligrams. Titration of sodium hydroxide solution NaoH = 0.0028g/mL=2.8m g/mL for t, second per ml of solution corresponds to the measured substance grams or milligrams. If titre of reagent T=3.5 card, 1mL card reagent is equivalent to 3.5 grams of water content, and when the determination of silver nitrate and sodium chloride, says there are two concentrations of silver nitrate: AgNO3 t t NaCl =1.84mg/mL, =1mg/mL, 1mg, indicating a 1mL solution containing silver nitrate, which represents the 1mL solution 1.84mg of sodium chloride, NaCl t =1.84 said, Known titre multiplied by the number of volume consumed in the titration of the standard solution, can be worked out of components to be measured, quite easy to calculate. Worth noting is that there are a lot of books or reagent also follows the concept of normality in the directory indicated by n, such as hydrochloric acid concentration is 0.1N indicates 1L hydrochloric acid solution containing 0.1 equivalent, also called volume parts per million. Was one of the original international concentration, is based on the equivalent law. Now with the new concept of "amount of substance, such as rules" instead of the equivalent law, so equivalent concentrations are no longer applied. On the relationship between n and m, the equivalent relation between concentration and Molarity, is not the same for different substances. Such as sulfuric acid: 1M h 2 SO 4 =2N h 2 SO 4, General writing m (1/2H 2 SO4) =0.1000mol/L, and potassium permanganate: 1M KMhO4 =5N KMnO 4, General writing m (1/5KMnO4) =0.1000mol/L. Third, the solution has not been made and saved (a) preparation of standard solution method