2013年理化生实验操作题目2013.4.7

2013年理化生实验操作题目2013.4.7 物理实验一: 观察凸透镜成像 一、试题说明: 1、正确组装光具座，依次安装蜡烛、凸透镜、光屏，三者中心在同一高度。 2、记录凸透镜焦距，根据成像性质，分别在u>2f;f < u < 2f ;u < f三种情况下进行验证， 掌握凸透镜成放大、缩小实像和虚像的条件。 二、实验器材: 光具座、[J2507，包括凸透镜(标明焦距)、光屏、支架等附件]1套，蜡烛， 火柴，废物盒。 物理实验二:研究杠杆平衡条件 一、 实验说明: 1、在支点两侧悬挂钩码，两侧挂上的钩码数量不得相等。 2、在实验记录单中正确记录以下数据及单位(力臂长度记录到厘米):动力臂长度、阻力臂长度、动力、阻力。 3、改变力和力臂的数值，再做一次实验，将数据及单位填入 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 格内。 4、分别求出两次实验动力×动力臂，阻力×阻力臂的数值及单位，得出并记录杠杆平衡的条件。二、实验器材:杠杆一支(带厘米刻度的)，杠杆支架一个(或用铁架台并组装好)，50g×10钩码一盒(每一个钩码按0.5N计算)。 物理实验三:研究滑动摩擦力 一、实验 说明: 1、正确组合研究滑动摩擦力的实验装置。 2、正确使用弹簧测力计。 3、研究滑动摩擦力的大小跟哪些因素有关 二、实验器材:长木板1块，一面有圆槽的木块1块，50g钩码2个，弹簧测力计(0~5N)1 只，毛巾1条，棉布1块，图钉4个 物理实验四:研究滑动变阻器改变电路中的电流 一、实验要求: 1、观察滑动变阻器铭牌上的有关数据并记录。 2、按电路图正确连接电路，正确连接滑动变阻器。 3、电路正常工作后，逐渐减少滑动变阻器的阻值，改变电路中电流，正确 记录电流表示数。 二、实验器材:小灯泡连座1 个( 2.5V )、滑动变阻器( 20Ω 2A) 1 个、电池盒( 3 节 l 号电池) 1 套、直流电流表( J 0407 )1只、单刀开关1个，导线若干。 物理实验五:浮力的的大小等于什么 一、 实验说明: 1、正确使用弹簧测力计称量物体的重力。 2、实验脉络清晰，步骤合理，测出相关数据。 3、探究浮力的大小等于什么。 二、实验器材:2.5N弹簧测力计、适量橡皮泥1块(可用200g钩码代替)、细线、溢水杯、 烧杯、水、小塑料桶、抹布。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 物理实验六:研究串联电路中电流的规律 一、 试题说明: L L 12b c a 1、按电路图正确连接电路。 2、电路图正常工作后，断开开关，检查电流表，试触 选择量 K1程后，将电流表串联到电路中，依次测出a、b、c三处的电流。 3、得出串联电路中各处电流的关系。 二、实验器材:电池盒(J2374)一个，一号电池3节，(可以用学生电源)，小灯泡连座(3.8V)二个，单刀开关(J2352) 一个，直流电流表(J0407)一只，导线(多股塑铜线， 两端裸露2cm)十根，小螺丝刀1把。 物理实验七:测定小灯泡的额定功率 一、试题要求: V 1、按电路图正确连接电路，正确连接滑动变阻器。 R 2、电路正常工作后，逐渐减少滑动变阻器接入电路的阻值，将电压表L A K 示数调整至小灯泡的额定电压，正确记录两表示数。 3、计算出小灯泡的额定功率。 二、实验器材:小灯泡连座1 个( 3.8V )、滑动变阻器( 20Ω 2A)1 个、电池盒( 3节 l 号电池) 1 套、直流电流表( J0407 ) 1只、直流电压表(J0408)一只，单刀开关1个，导线 (多股塑铜线，两端裸露2cm)十根。 物理实验八:用托盘天平测液体的质量 一、实验要求:1、调节天平平衡; 2、正确测液体质量 二、实验器材:托盘天平1台(J0106，称量范围0—200g，感量0.2g，附砝码1盒)， 烧杯50ml1只，另有盛水烧杯500ml 1只，干布1块，废物桶。 物理实验九: 测量斜面的机械效率 一、 实验说明: 1、正确使用弹簧测力计的量称和操作过程。2、实验脉络清晰，步骤合理，测出相关数据。 二、实验器材:木质米尺(最小刻度为毫米)、长木板(J2108型斜面)，木质滑块(附挂钩)，弹簧测力计(量程2.5N或相近规格)，铁架台(或高度合适并可以改变长方体的木垫)和计算器各一个。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 物理实验十:研究串联电路中电压的规律 一、 实验说明: L R 1、按电路图正确连接电路。 2、电路图正常工作后，断开开关，检查电压表，试触选择量程后，K 将电压表并联到电路中，依次测出L、R及L和R串联后两端的 电压UL、UR、U总 。 3、得出U总 和UL、UR的关系。 二、实验器材:电池盒(J2374)一个，一号电池3节，(可以用学生电源)，小灯泡连座(3.8V)一个，单刀开关(J2352)一个，定值电阻一个(15Ω)，直流电压表(J0408)一只，导线(多股塑铜线，两端裸露2cm)十根，小螺丝刀1把。 物理实验十一:用电流表测并联电路的总电流 一、 实验说明: 1、按电路图正确连接电路。 2、电路图正常工作后，断开开关，检查电流表，试触选择量程后， 将电流表串联到电路中。 3、测量干路总电流并记录。 二、实验器材: 电池盒(3v)一个(可以用学生电源)，小灯泡连座(2.5V)一个，定值电阻(10Ω)一个，单刀开关一个，导线(多股塑铜线，两端裸露2cm)十根，电流表一只。 物理实验十二:测量课本对桌面的压强 一、 实验说明: 1、正确使用弹簧测力计、木制直尺的量程和操作过程。 2、实验脉络清晰，步骤合理，测出相关数据。 实验器材:课本、长细线、木制直尺( 分度值是,,,)、弹簧测力计(量程5N或其他规格)、计算器。 物理实验十三:测定水的沸点 一、实验说明: 1 、正确组装加热装置。; 2 、用酒精灯正确加热。 3 、正确记录水沸腾前的温度变化、水沸腾时温度变化及沸点。 二、实验器材: 铁架台、烧杯(100ml)，热水85度以上，拴好细线的温度计( 100 ? )、石棉网、酒精灯，火柴、中心有孔的纸板、废物桶、抹布。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 化学实验一:组装过滤装置并过滤粗食盐水 实验要求:正确组装一套过滤装置，并利用它过滤粗食盐水 实验用品:漏斗、圆形滤纸(对折后低于漏斗边缘)、玻璃棒、烧杯、铁架台(带铁圈)、 粗食盐水(约10ml，盛放于烧杯中)、滴管、蒸馏水(盛放于烧杯中)、放玻璃棒和滴管 用的烧杯、盛放废弃物的大烧杯。 化学实验二:用盐酸中和氢氧化钠溶液 实验要求:以酚酞为指示剂，用盐酸中和氢氧化钠溶液 实验用品:试管(20×200)2支、试管架、胶头滴管2支(贴盐酸、氢氧化钠标签)、 酚酞试液、盐酸、氢氧化钠溶液(两者均为0.5摩尔/升，分装于试剂瓶中)、蒸馏水 (装于烧杯中，洗涤仪器用)、盛放滴管用的烧杯(200ml)、盛放废弃物的大烧杯。 化学实验三:鉴别硫酸钠、碳酸钠和盐酸三种溶液 实验要求:1、根据所给试剂鉴别三种溶液 2、洗刷试管 实验用品:试管架、试管(20mm×200mm)5支、试管刷(与试管配套)胶头滴管(放250ml 烧杯内)，硫酸钠溶液(5%)、盐酸(1:4)、饱和的碳酸钠溶液(三种溶液分别盛于3个 125ml的细口瓶中，随机标上A、B、C)，氯化钡溶液(5%盛于滴瓶)水(盛于100ml小烧 杯中，用于洗涤胶头滴管)，污物桶。 化学实验四:小刚家使用的水是硬水 实验要求:小刚同学在洗衣服时发现，衣服总是洗不干净，有人告诉他可能是水质偏“硬”的原因。现实验台上摆放的就是小刚洗衣服时所使用的水样和可做对比用的软水，请你设计 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 并通过实验来判定小刚家的水是不是硬水，简要填写探究 报告 软件系统测试报告下载sgs报告如何下载关于路面塌陷情况报告535n,sgs报告怎么下载竣工报告下载 。 实验用品:锥形瓶2个，软水与水样(分别装于贴有标签的细口瓶中)、肥皂水(装于贴有标签的滴瓶中)、蒸馏水(装于塑料洗瓶中、洗涤仪器用)、试管刷、盛放废弃物的大烧杯(500mL)。 化学实验五:配制选种所需的食盐水 实验要求:种子的质量是丰产丰收的保证，选种的方法有多种，用12%的食盐水选种 是常用的一种方法。现在请你模拟配制选种所用的食盐水50g，并转移至储液瓶中。 可供选择的实验用品:食盐(装于广口瓶中)、自来水(装于细口瓶中)、托盘天平(已 调节好平衡)、白纸两张(同样大小)、烧杯(100 mL)、量筒(20 mL、50 mL、100 mL)、玻 璃棒、胶头滴管、细口瓶(空瓶，贴有“12%食盐水” 的标签)、药匙、洁净的纸片(用于 擦拭药匙)、盛放玻璃棒和滴管的烧杯两个(200 mL左右)、盛放废弃物的大烧杯(500mL)。 化学实验六:探究物质燃烧的条件 (有个图) 实验要求:为防止火灾的发生，在某些场所常会张贴如右图所示的标示。该标示的内容及其张贴的场所 反映了燃烧所应具备的一些条件。现在，你的实验台上摆放有从生活中搜集到的一些物品，请你设计实 验并选择合适的物品探究物质燃烧时必需具备的条件。并简要填写探究报告。 可供选择的实验用品:小木条(若干支，盛放于小烧杯中)、蜡烛(2支，高约4cm，事先固定在玻璃 片上)、水(盛放于烧杯中)、干燥棉球(盛放于广口瓶中)、石灰石(盛放于广口瓶中)、酒精灯2个、 火柴、石棉网、镊子、洁净的烧杯(250mL)、盛放废弃物的烧杯(500mL)。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 化学实验 七: 探究实验室废液的成分 实验要求:为回收利用某次实验后的废液，学校化学兴趣小组的同学决定通过实验探究废液的 成分。现已确定废液中含有氢氧化钠，根据实验过程中所用药品分析，其中还可能含有碳酸钠。 现在，你的实验台上摆放有该实验废液的样品，上一组同学已用过滤的方法除去了其中的不溶 物。请你接着设计实验，选择合适的试剂或用品，通过至少2种实验方法探究该废液中是否含(( 有碳酸钠，并简要填写探究报告。 可供选择的实验用品:无色酚酞试液、澄清的石灰水、BaCl溶液(盛放于滴瓶中)、稀盐酸、待2 测实验室废液(盛放于贴有“废液”标签的细口瓶中)、试管2支(20×200mm)、试管架、试 管刷、盛放废弃物的烧杯(500mL)。 化学实验八:探究化工厂污水的酸碱度并进行处理 学校附近有一化工厂，其排放污水的酸碱度一直不达标(已知达标pH为6,8)。现实验台上有该化工厂的污水样品，请你取该污水10mL，设计实验探究其酸碱度，在不使用指示剂的情况下选择最佳方法对其进行处理，并确认达到排放标准，同时简要填写探究报告。 可供选择的实验用品:污水样品(盛放于贴有标签的细口瓶中)、稀盐酸、氢氧化钙粉末、碳酸钙粉末、pH试纸、比色卡、烧杯(50mL)、量筒(10mL)、滴管、药匙、玻璃棒两支、镊子、玻璃片、蒸馏水(用于清洗玻璃棒和烧杯)、洁净的纸片(用于擦拭玻璃片和药匙)、试管刷、盛放废弃物的烧杯(500mL) 化学实验九:二氧化碳的制取及验满 实验要求:利用已经装配好的制取二氧化碳的实验装置制取、收集一瓶二氧化碳并验满。 实验用品:一套完整的实验室制取二氧化碳的装置(仪器包括铁架台、铁夹、大试管、带导 管的橡皮塞、125ml集气瓶、玻璃片、经检验气密性良好的气体发生装置)、块 状的石灰石或大理石、稀盐酸(1:2)、酒精灯、木条、火柴、镊子、盛放废弃 物的大烧杯。 化学实验十:探究化学反应前后的质量变化 实验要求:正确使用天平，探究化学反应前后物质总质量的变化。 实验用品:500g托盘天平一个(调平)，20mm×100mm试管一支，10%的NaOH溶液、CuSO4 溶液分别盛于125ml细口瓶中，250ml锥形瓶一个，与锥形瓶配套的橡胶塞一个，试管架一个。 化学实验十一:探究二氧化锰在过氧化氢分解中的催化作用 实验要求:1、能用量筒准确量取一定体积的液体 2、正确掌握药品的取用方法 实验用品:试管20mm×200mm1支，量筒10ml1支、药匙1个、火柴、胶头滴管、试管刷1 个、3%的HO溶液(盛于125ml细口瓶中)、MnO、酒精灯1个。222 化学实验十二:配制质量分数为1%的氯化钠溶液50ml 实验要求:正确使用量筒和滴管用准备好的10%氯化钠溶液配制成50ml 1%的氯化钠溶液。 实验用品: 100ml和10ml量筒各一个，胶头滴管二只(分放在两个烧杯内)、100ml 烧杯(贴有“1%的氯化钠溶液”标签)一个，10ml氯化钠溶液(10%)盛于60ml细口 瓶中，蒸馏水盛于125ml细口瓶中。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 化学实验十三: 设计实验探究酸雨对环境的影响 实验要求:煤等化石燃料的燃烧会排放出二氧化硫、二氧化氮等污染物，这些气体或气体在空气中反应后的生成物溶于雨水，会形成酸雨。请从下列试剂和用品中选择合适的代表物，设计方案并通过酸雨与普通雨水的对比实验探究酸雨会对周围环境中的大理石建筑、金属制品、植物产生怎样的影响(探究其中两种即可)，同时简要填写实验报告。 可供选择的实验用品:模拟酸雨(盛放于贴有标签的试剂瓶中)、普通雨水(盛放于贴有标签的试剂瓶2中)、石灰石、洁净的铁钉(若干，盛放于贴有标签的广口瓶中)、绿色叶子(若干，分割成约1 cm的小块儿，盛放于贴有标签的广口瓶中)、试管(20×200 mm)4支、试管架、镊子1个、试管刷、盛放废弃物的烧杯(500mL)。 生物实验一:观察玉米种子的结构 一、实验要求:熟练解剖玉米种子、探究其结构 二、实验器材:浸软的玉米种子、刀片、滴管、放大镜、摄子、载玻片、解剖针、培养器 生物实验二:用显微镜观察根尖纵切片 根据科学家的观察，植物的根一般来说相当于植物身高的5-15倍，根的生长可延伸到 很广的范围。那么，根是靠哪部分生长的,根尖的结构是怎样的,请借助显微镜观察根尖的 纵切片。 生物实验三: 用显微镜观察人血涂片 血液是“生命之源”，具有运载血细胞、运输养料和废物的功能。血液中的三种血细胞 其形态、大小、结构、数目是不同的。请你借助实验台上的显微镜，识别人血涂片中的红细 胞和白细胞。 生物实验四: 制作并观察洋葱表皮临时装片 要想观察表皮细胞的结构需制作临时装片。所需物品如下:显微镜、洋葱、刀片、载玻 片、盖玻片、镊子、吸管、清水(滴瓶装)、解剖针、纱布、稀碘液、吸水纸、500ml大烧 杯(盛有清水)、抹布。请你制作一张洋葱表皮临时装片并在显微镜下观察。 生物实验五: 鉴定蛋白质和淀粉 现有A、B两种溶液各50mL，但不确定哪个是面粉或奶粉溶液，请你利用10%氢氧 化钠溶液、3%硫酸铜试剂、稀碘液、A、B两只试管、两只滴管、试管刷、清水、废液缸等 材料用具，将它们分别鉴定出来。 生物实验六: 探究唾液对淀粉的消化作用 细嚼馒头时会感到越嚼越甜。这是唾液的作用吗,这里准备了淀粉糊、清水、稀碘液等 材料以及滴管、2只试管(标记为1、2号)、大烧杯、温水、试管刷、抹布等用具，请你探究 唾液对淀粉的消化作用。 生物实验七: 探究骨含有机物和无机物 老年人摔倒后容易骨折,而青少年则不然。为什么不同年龄的人摔跤后会有两种结果 呢,这与骨的成分有关。请利用所提供的鱼肋骨、15%盐酸溶液、小烧杯、清水、大烧杯、 镊子、酒精灯、火柴、瓷盘等材料用具，探究骨的成分。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: 生物实验八: 探究种子萌发的外界条件 农民播种时总是千方百计地满足种子萌发所需的外界条件。你认为种子萌发究竟需要什么外界条件呢,这里准备了若干菜豆种子和绿豆种子及培养皿、纱布、清水等用品，请你设计并实施一种探究方案，探究种子萌发所需的一种外界条件。 生物实验九: 探究水果中是否含有维生素C 人所共知,多吃水果对人体有好处。那么，水果中含有哪些维生素,请你根据所给的桔子、0.1%的高锰酸钾溶液、纱布、小烧杯、试管、滴管等实验材料和用具，设计并实施一种探究方案，探究水果中含有维生素C。 生物实验十:探究人呼出的气体中含有较多二氧化碳 通过学习我们知道:肺与外界进行气体交换是通过呼吸运动完成的，气体交换的结果是人吸入氧气，呼出二氧化碳。那么，我们呼出的气体中是否含有较多的二氧化碳呢,请你根据所给的澄清石灰水，三角瓶、玻璃管、洗耳球等实验材料和用具，设计并实施一种实验方案，探究人呼出的气体中含有较多的二氧化碳。 loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, payment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: ... Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the loan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use the loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case, agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: