三级测试试题

合集下载

公共营养师三级测试题及答案

公共营养师三级测试题及答案一、单选题（共40题，每题1分，共40分）1、豆类加工后可提高蛋白质消化率，下列何种食物的蛋白质消化率最高（）A、整粒熟大豆B、豆腐C、豆芽D、豆浆正确答案：B2、进行蛋白质互补作用评价时，可计算食物的（）。

A、价格B、氨基酸评分C、蛋白质数量D、熔点正确答案：B3、广泛开展营养与健康知识宣传教育的理论基础是()。

A、行为改变理论B、营养教育C、营养咨询D、营养信息传播理论E、社区动员正确答案：D4、下列脂肪供能比计算公式正确的是（）。

A、脂肪摄入量×9÷总能量摄入量×100%B、脂肪摄入量×2÷总能量摄入量×100%C、脂肪物摄入量×4÷总能量摄入量×100%D、脂肪摄入量÷总能量摄入量×100%正确答案：A5、山梨酸较之苯甲酸,其pH值适应范围()。

A、相同B、窄C、无法比较D、广正确答案：D6、开展社区营养管理工作的基本程序分为个步骤()。

A、六B、四C、五D、七E、三正确答案：C7、健康档案的内容中问题描述是将每一个问题依序号顺序逐一以SOAP”的形式进行描述,其中字母A代表()。

A、主观资料B、评估C、客观资料D、计划正确答案：B8、个人健康问题记录不包括()。

A、基本资料B、问题描述C、问题目录D、周期性健康检查记录正确答案：D9、社区营养干预方案不应该考虑( )。

A、干预社区的历史和现实地位B、干预的难度C、干预成本效益D、所要干预的营养问题的重要程度正确答案：A10、()是贯穿于干预的始终,其目的是通过评价监测干预活动的进展情况和效果,进行信息反馈,以及时调整计划,达到预期目标。

A、项目评价B、制定项目目标C、制定营养干预策略D、制定经费预算正确答案：A11、孕早期由于呕吐完全不能进食时,静脉给予葡萄糖主要是为了()。

A、促进脂肪动员B、促进机体利用蛋白质C、促进微量营养素吸收D、防止胎儿低血糖症E、防止酮体对胎儿早期脑发育的影响正确答案：E12、蛋白质真消化率计算公式下列正确的是()。

剑桥少儿英语三级测试题

剑桥少儿英语三级测试题I。

Read the words and sentences。

Find the correct word and write it on the line。

(8x2=16)1.If you are ill。

take this and it will make you feel better。

(medicine)2.Children usually go to school in them and some people go to work in them too。

(uniforms)3.It is an animal which lives in Australia and can jump high。

(kangaroo)4.You go there to have dinner with your friends。

(restaurant)5.It lives in the water。

It’s the one with eight legs。

(us)6.Your trousers or shorts may fall down without it。

(belt)7.Some people like to climb it and you can see a lot from the top of it。

(mountain)8.You put all your photos together in that。

(album)II。

Read and choose。

(6x2=12)1.XXX(B)2.The tiger is one of the most dangerous animals in the world。

(A)3.XXX(B)4.The Earth goes around the sun。

(A)5.XXX food for us。

三级安全教育试题及答案

三级安全教育试题及答案第一部分：理论知识测试Ⅰ.选择题1.下列哪项不属于企业安全生产管理的基本要素？A.安全责任B.安全制度C.安全设施D.安全检查答案：C.安全设施2.危险源辨识是企业安全管理的基础，下列哪项不属于危险源的主要分类？A.物理危险源B.人为危险源C.通信危险源D.生产危险源答案：C.通信危险源3.安全生产事故的直接原因通常是什么？A.管理不善B.人员操作失误C.设备故障D.天灾人祸答案：B.人员操作失误4.以下哪个不是安全事故的基本类型？A.伤亡事故B.火灾事故C.爆炸事故D.泄露事故答案：D.泄露事故5.在紧急情况下，正确的自救逃生顺序是什么？A.报警、自救、灭火、救援B.报警、灭火、自救、救援C.灭火、报警、自救、救援D.灭火、自救、报警、救援答案：A.报警、自救、灭火、救援Ⅱ.判断题1.生产经营单位的主要负责人对本单位的安全生产工作全面负责，正确或错误。

答案：正确2.应急救援是处理突发事件的一种重要手段，正确或错误。

答案：正确3.事故隐患不会导致事故发生，不需要进行整改，正确或错误。

答案：错误4.在火灾发生时，应使用电梯逃生，正确或错误。

答案：错误5.对于安全事故中的受伤员工，应立即离开现场，正确或错误。

答案：错误第二部分：应用能力测试Ⅰ.场景题1.某工厂危险品仓库发生火灾，请问下列应急措施中，哪项不正确？A.立即呼叫消防队伍和工厂安全责任人B.关闭门窗，防止火势蔓延C.使用明火扑灭火源D.及时将仓库内的人员疏散到安全地方答案：C.使用明火扑灭火源2.企业进行安全事故风险评估时，下列哪项不属于风险评估的基本要素？A.事故发生的可能性评估B.事故发生后果的评估C.事故发生的具体时间评估D.事故发生的控制能力评估答案：C.事故发生的具体时间评估3.某厂车间发生中毒事故，下列哪项应急处置措施不正确？A.立即保护好自己，随时准备撤离现场B.迅速报警并向相关人员汇报C.对中毒员工进行急救处理D.查明中毒原因并采取措施，防止事故扩大答案：A.立即保护好自己，随时准备撤离现场Ⅱ.案例题某企业生产车间发生爆炸事故，导致多名员工受伤。

公共营养师三级测试题含参考答案

公共营养师三级测试题含参考答案一、单选题（共40题，每题1分，共40分）1、最先在体内进行化学性消化的营养素是（）A、淀粉B、蛋白质C、麦芽糖D、脂肪正确答案：A2、痛风患者的主要能量来源为()A、牛奶、鸡蛋B、主食C、畜肉D、水产品E、水正确答案：B3、下列不属于维生素A缺乏表现的是()。

A、血清视黄醇含量低于0.35umol/LB、生理盲点缩小C、眼结膜杯状细胞消失D、尿液上皮细胞超过3个/(mm³)正确答案：B4、按照中国居民平衡膳食宝塔的要求,每天鱼、禽、肉、蛋等动物性食物的摄入量应为()。

A、250~400gB、75-120gC、120-200gD、25~30gE、40~75g正确答案：C5、我国1-5岁儿童发生营养不良时上臂围为()。

A、12.5-13.5B、>14.5C、<12.5D、>13.5正确答案：C6、社区按功能可划分为()。

A、执法单位、事业单位、机关、学校和居民生活区B、企业、事业单位、派出所、学校和居民生活区C、企业、事业单位、机关、学校和居民生活区D、公司、服务机构、机关、学校和居民生活区正确答案：C7、人体维生素B2缺乏的特异诊断方法为()。

A、尿核黄素测定B、核黄素负荷实验C、治疗实验D、全血谷胱甘肽还原酶活力系数测定正确答案：D8、婴儿膳食中碳水化合物的主要来源是()。

A、乳糖B、葡萄糖C、半乳糖D、糖原E、淀粉正确答案：A9、某种固态食品,其能量值需满足(),才可声称是低能量食品。

A、≤120kJ(28.7kcal)/100gB、≤170kJ(40kcal)/100gC、≤100kJ(23.9kcal)/100gD、≤150kJ(35.9kcal)/100g正确答案：B10、乳母能量RNI，是在非孕育龄妇女的基础上增加( )A、500 kcal/dB、400 kcal/dC、600 kcal/dD、300kcal/d正确答案：A11、妊娠时体重正常，计划哺乳的孕妇，孕期体重增加的适宜值为（）kg。

三级安全教育考试试题(全)及答案

三级安全教育考试试题（车间级）一、单项选择题1、下列物质中，属于易燃易爆压缩气体或液化气体的有（）。

A、液氨B、空气C、氮气D、汽油2、凡一次销毁（）千克以上的易燃易爆化学物品的，应报请当地公安消防机构和环保部门的同意，在指定的地点采用指定的方法销毁。

A、30B、50C、80D、1003.下列()灭火剂是扑救精密仪器火灾的最佳选择。

A.二氧化碳灭火剂B.干粉灭火剂C.泡沫灭火剂4.用灭火器灭火时,灭火器的喷射口应该对准火焰的()。

A.上部B.中部C.根部5.身上着火后,下列哪种灭火方法是错误的()。

A.就地打滚B.用厚重衣物覆盖压灭火苗C.迎风快跑6.室内不得存放超过()公斤的汽油。

A.1.5 B.1 C.0.57.()必须分间、分库储存。

A.灭火方法相同的物品B.容易相互发生化学反应的物品C.以上两种答案都对8.依据《仓库防火安全管理规则》,库房内的照明灯具的垂直下方与储存物品水平间距不得小于()米。

A.0.3 B.0.4 C.0.59.架空线路的下方()堆放物品。

A.可以 B.不可以 C.经批准后可以10.下列()火灾不能用水扑灭? A.棉布、家具 B.金属钾、钠 C.木材、纸张11.电脑着火了,应()。

A.迅速往电脑上泼水灭火B.拔掉电源后用湿棉被盖住电脑C.马上拨打火警电话,请消防队来灭火12.用灭火器进行灭火的最佳位置是（）A.下风位置B.上风或侧风位置C.离起火点10米以上的位置D.离起火点10米以下的位置13.干粉灭火器多长时间检查一次（）。

A.半年B.一年C.三个月D.两年二.填空题1.火灾逃生的四个要点是、、、、2.干粉灭火剂主要适用于扑救物质的火灾，有的还适用于扑救木材、轻金属和碱金属火灾。

3.火灾中，烟气对人的危害特性有三.判断题（共15题，每题1分，共15分）1.泡沫灭火器可用于带电灭火。

（）2.物质的燃点越低、越不容易引起火灾。

（）3.发生了燃烧就发生了火灾。

（）4.凡是设有仓库或生产车间的建筑内，不得设职工集体宿舍。

中小学英语学习成绩测试NEAT三级试题

中小学英语学习成绩测试NEAT三级试题第一部分：听力（共20小题，每小题1.5分，共30分）请根据你所听到的句子内容，选择正确的答案。

1. What time is it now?A. It's 4:30.B. It's 5:30.C. It's 6:30.2. How does the girl go to school?A. By bike.B. By bus.C. On foot.3. Where does Peter live?A. In a house.B. In an apartment.C. In a dormitory.4. What does the boy want to be in the future?A. A doctor.B. A teacher.C. A scientist.5. What does the girl like to eat?A. Apples.B. Bananas.C. Grapes.6. How much does the bag cost?A. $5.B. $15.C. $50.7. What is the man doing?A. Watching TV.B. Reading a book.C. Cooking.8. How many people are there in the picture?A. Two.B. Three.C. Four.9. When is your birthday?A. In January.B. In June.C. In September.10. How often does Mary exercise?A. Once a week.B. Twice a week.C. Every day.11. Where will the party take place?A. At the park.B. At the restaurant.C. At Jane's house.12. What time does the train leave?A. At 8:30.B. At 9:00.C. At 10:00.13. What is the man doing?A. Playing the guitar.B. Dancing.C. Singing.14. What color is the woman's dress?A. Blue.B. Green.C. Yellow.15. What does the boy want from the girl?A. A pen.B. A pencil.C. An eraser.16. What will the weather be like tomorrow?A. Sunny.B. Rainy.C. Cloudy.17. What is the woman afraid of?A. Snakes.B. Spiders.C. Bees.18. How long does it take to get from the man's house to the supermarket?A. 10 minutes.B. 20 minutes.C. 30 minutes.19. Where did the girl leave her umbrella?A. At home.B. At school.C. On the bus.20. When is the next holiday?A. Christmas.B. Thanksgiving.C. New Year's Day.第二部分：阅读理解（共20小题，每小题2.5分，共50分）阅读下列短文，然后根据短文内容选择正确答案。

公共营养师三级测试题含参考答案

公共营养师三级测试题含参考答案一、单选题（共70题，每题1分，共70分）1、在进行膳食结构评价计算乳类摄入量时，应按蛋白质的含量将______折算成______的量进行计算（）。

A、配方奶粉；鲜牛乳B、母乳；配方奶粉C、奶粉；鲜牛乳D、鲜牛乳；奶粉正确答案：C2、在以下食物中胆固醇含量最高的是（）。

A、猪肉B、猪皮C、猪舌D、猪脑正确答案：D3、测量皮褶厚度的意义包括（）。

A、反映机体肌肉的发育状况B、反映机体营养状况C、是衡量机体肥胖程度较好的指标D、与人体皮下脂肪的分布无关正确答案：C4、尿液保存时加入（）防腐效果较好，但能干扰尿糖测定。

A、碳酸钠B、浓盐酸C、甲苯D、氯仿正确答案：D5、性别、学历、满意程度等资料属于（）。

A、计数资料B、网络资料C、实验室资料D、计量资料正确答案：A6、具有抗氧化作用的矿物质是（）A、铁B、钙C、镁D、硒正确答案：D7、在中小学生的食谱中，每份午餐提供的钙不应低于（）mg。

A、400B、300C、200D、100正确答案：A8、人体能量消耗主要作用不包括（）A、基础代谢B、蛋白质互补作用C、体力活动D、生长发育正确答案：B9、膳食中三大热能营养素的来源比例为（）较适宜。

A、蛋白质10%～14%，脂肪25%～35%，碳水化合物55%～60%B、蛋白质10%～12%，脂肪25%～30%，碳水化合物60%～70%C、蛋白质10%～15%，脂肪20%～25%，碳水化合物55%～60%D、蛋白质10%～l3%，脂肪20%～30%，碳水化合物60%～70%正确答案：C10、以下属于微量元素的是（）。

A、钾B、银C、氯D、铁正确答案：D11、S为n次检测结果的标准差，表示（）的离散性。

A、梯度B、总和C、均值D、差值正确答案：C12、下列哪种微量元素能有效防治克山病（）A、钙B、氟C、硒D、碘正确答案：C13、下列保存方法适用于粪便中矿物质代谢研究检测的是（）。

A、培养基保存B、冷藏保存C、冷冻保存D、固定保存正确答案：C14、在下列食品中蛋白质消化率最高的是（）。

电工三级(高级)测试题与答案

电工三级（高级）测试题与答案1、若使三极管具有电流放大能力，必须满足的外部条件是( )。

A、发射结正偏、集电结正偏B、发射结反偏、集电结反偏C、发射结正偏、集电结反偏D、发射结反偏、集电结正偏答案：C2、电压负反馈加电流正反馈的直流高速系统中，电流正反馈环节（）反馈环节。

A、是补偿环节，而不是B、不是补偿环节，而是C、是补偿环节，也是D、不是补偿也不是答案：A3、双闭环调速系统中电流环的输入信号有两个，即（）。

A、主电路反馈的转速信号及ASR 的输出信号B、主电路反馈的电流信号及ASR 的输出信号C、主电路反馈的电压信号及ASR 的输出信号D、电路给定的信号及ASR 的输出信号答案：B4、5t 桥式起重机的小车电动机一般用( )实现启停和调速的控制。

A、断路器B、接触器C、凸轮控制器D、频敏变阻器答案：C5、直流启动电动机是（）直流电动机。

A、串激式B、并激式C、复激式答案：A6、三相全控桥式整流电路电阻负载，电流连续与断续的分界点是控制角α=( )。

A、60°B、120°C、30°D、90°答案：A7、TTL 与非门输入端全部接高电平时，输出为（）。

A、零电平B、低电平C、高电平D、可能是低电平，也可能是高电平答案：B8、定时器构成的单稳态触发器单稳态脉宽由( )决定。

A、输入信号B、输出信号C、电路电阻及电容D、555 定时器结构答案：C9、（）用来提供一定波形及数值的信号。

A、数字万用表B、电子毫伏表C、示波器D、信号发生器答案：D10、电容三点式正弦振荡器属于（）振荡电路。

A、 RCB、 RLC、 LCD、石英晶体答案：C11、两个完全相同的交流铁心线圈，分别工作在电压相同而频率不同（f1＞f2）的电源下，此时两个线圈的磁通φ1 和φ2 的关系为（）。

A、φ1＞φ2B、φ1＝φ2C、φ1＜φ2D、不定答案：C12、低频信号发生器的振荡电路一般采用的是（）振荡电路。

叉车司机三级测试题与参考答案

叉车司机三级测试题与参考答案一、单选题（共60题，每题1分，共60分）1、滚动轴承轴箱顶部温度如果比外界气温高（）以上，则属于非正常现象，应立即打开轴箱盖检查。

A、20℃B、50℃C、30℃D、40℃正确答案：D2、WD615.64G-12型柴油机启动时，如果连续（）不能启动时应停止启动，找出原因排除故障后再启动。

A、一次B、二次C、三次D、四次正确答案：B3、NS1602型起重机的起升机构的定滑轮组和动滑轮组由（）尼龙滑轮组成。

A、10片B、12片C、14片D、8片正确答案：D4、KRC1600HA型起重机起重臂的工作半径（总的工况）为（）。

A、6.5m+7mB、6m+7mC、6.5m+7.5mD、7m+8m正确答案：A5、N1002型轨道起重机不使用支腿，副钩起重量15t时，工作幅度最大为（）。

A、6.5mB、9mC、8mD、7m正确答案：A6、装备图必须具备一组视图，它包括（）内容。

A、4项B、5项C、3项D、2项正确答案：A7、柴油机冒白烟是因为（）。

A、喷油器雾化不良B、调节器故障C、燃油中含有水分D、进气系统故障正确答案：C8、回转支承工作后第一个50h和200h，应检查一次螺栓的预紧扭矩，以后每（）检查一次。

A、600hB、500hC、800hD、400h正确答案：B9、N1601型起重机走行减速器的作用是将液压马达输出的（）传递给转向架的动轴和车轮，以实现自力运行。

A、转速B、动能C、扭矩D、压力能正确答案：C10、NS1602型起重机臂架平车两端配置外接（）输入电源插座。

A、DC28V/18VB、AC220V/DC28VC、AC380V/220VD、AC220V正确答案：C11、按搓拧方向，其柔性和耐磨的钢丝绳为（）。

A、混合搓钢丝绳B、反搓钢丝绳C、普通结构钢丝绳D、顺搓钢丝绳正确答案：D12、NS1602型起重机液压传动系统换油后，启动发动机，回转机构、卷扬机构空运转，各运转（）往复行程。

三级英语挑战测试题及答案

三级英语挑战测试题及答案一、选择题（每题2分，共20分）1. Which of the following is the correct way to say "我正在考虑去度假" in English?A. I am considering to go on vacation.B. I am considering going on vacation.C. I am thinking about going on vacation.D. I am thinking to go on vacation.答案：B2. Fill in the blank: "The weather is very ________ today."A. niceB. goodC. wellD. fine答案：A3. Choose the correct preposition for the sentence: "She is looking ________ a new job."A. atB. forC. inD. to答案：B4. Which of the following sentences is grammatically correct?A. She don't like to eat vegetables.B. She doesn't like eating vegetables.C. She don't likes to eat vegetables.D. She doesn't like to eat vegetable.答案：B5. What is the past tense of "build"?A. buildedB. builtC. buildingD. builds答案：B6. Choose the correct word to complete the sentence: "The________ of the book is very interesting."A. coverB. cover storyC. storyD. plot答案：D7. Which phrase is used to express agreement with a previous statement?A. I can't agree more.B. I disagree.C. I don't agree.D. I'm not sure.答案：A8. What does the abbreviation "ASAP" stand for?A. As Soon As PossibleB. As Slow As PossibleC. As Soon As PossibleD. As Safe As Possible答案：A9. Fill in the blank: "Please ________ the door when you leave."A. lockB. closeC. shutD. all of the above答案：D10. Choose the correct sentence structure for a polite request.A. Can you pass the salt?B. You pass the salt.C. You must pass the salt.D. Pass the salt.答案：A二、填空题（每题2分，共20分）1. ________ (如果) you don't understand the question, pleaseask the teacher for help.答案：If2. She decided to ________ (学习) a new language after her trip to Spain.答案：learn3. The ________ (会议) was postponed due to bad weather.答案：meeting4. He is ________ (非常) interested in photography.答案：very5. The ________ (孩子) are playing in the park.答案：children6. ________ (无论) you go, I will follow you.答案：Wherever7. The ________ (消息) came as a surprise to everyone.答案：news8. They ________ (花费) two hours on the project.答案：spent9. ________ (尽管) it was raining, they went out for a walk. 答案：Despite10. She is ________ (非常) talented.答案：extremely三、阅读理解（每题2分，共20分）阅读以下短文并回答问题。

大学英语三级测试题-(三)-教师版

大学英语三级测试题（三）Part II Vocabulary & StructureDirections: This part is to test your ability to construct grammatically correct sentences. It consists of 2 sections.Section ADirections: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C) and D). Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.16. Allan is looking forward to _______ the trade fair.A) meetB) meetingC) be meetingD) having met17. The sales manager had his secretary ________ a press conference for their new products.A) arrangeB) to arrangeC) have arrangedD) arranged18. The message ________ Mr. Black was elected chairman of the committee arrived just in time.A) whichB) whatC) thatD) how19. They had talked only for a few minutes ________ they found they were of different opinions.A) unlessB) whileC) beforeD) once20. By the time you month, I ________ my term paper.A) have completedB) completeC) am completingD) will have completed21. It is important to provide an environment ________ people are encouraged to make suggestions at all levels of the company.A) from whichB) on whichC) in whichD) for which22. The scientists wanted to keep people ________ about the breakthrough in their experiment.A) informB) informedC) informingD) to inform23. When I first arrived in Japan, I was surprised ________ the way people greeted each other.A) ofB) toC) withD) at24. Not until that day ________ the importance of good manners in a job interview.A) did I realizeB) I did realizeC) I have realizedD) have I realized25. The market economy is quickly changing people’s idea on ________ is accepted.A) thatB) whichC) whatD) howSection BDirections: There are 10 incomplete statements here. You should fill in each blank with the proper form of the word given in brackets. Write the word or words in the corresponding space on the Answer Sheet.26. He tried to solve the problem, but he (quick) ________ gave up.27. The guest paid (little) ________ money than he should for the room.28. It is far more (interest) ________ for me to chat online with friends than to watch TV.29. Finally the woman found her (lose) ________ child with the help of the police.30. a raise in salary because of his excellent (perform) ________ at work.31. This hospital, which (equip) ________ with modern facilities, is one of the best in the country.32. Before (write) ________ an application letter, you should be aware what kind of people the employer needs.33. In the past few years, traffic problems (become) ________ more and more serious.34. It’s r eally (wonder) ________ to see you here again in Beijing.35. If I (be) ________ you, I wouldn’t miss the job interview tomorrow morning.Part III Reading ComprehensionDirections: This part is to test your reading ability. There are 5 tasks for you to fulfill. You should read the reading materials carefully and do the tasks as you are instructed.Task 1Directions: After reading the following passage, you will find 5 questions or unfinishedstatements, numbered 36 to 40. For each question or statement there are 4 choices marked A), B), C) and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.The iMOVE database（数据库）information platform for persons interested in job opportunities offered by German companies. The information can be obtained in seven languages: German, English, French, Spanish, Chinese, Russian and Arabic.All programs in the area of professional training are carried out by German training providers. All these programs have a clear content to meet your special needs.Programs which take place in Germany are carried out in English. Many of the German training providers have started their training activities towards the international market. Therefore, they also offer courses abroad. These courses are taught in English or the language of the target country. Providers will be glad to supply you with additional information on these courses. You can contact the provider directly to find out more about a program and the training provider.To guarantee high standards in the database, iMOVE has developed quality standards for training providers and their services. All of the training facilities in the iMOVE database have to follow these quality criteria (标准). All training providers who publish their international training programs in the iMOVE database have recognized our General Terms and Conditions.36. The iMOVE database is intended for persons who ________.A) seek a job as a language translatorB) are interested in the German languageC) want to be employed by German companiesD) wish to work for professional training providers37. The iMOVE programs are carried out by ________.A) language training centersB) German training providersC) special service developersD) overseas employment advisers38. held in Germany are taught in _________.A) GermanB) EnglishC) FrenchD) Chinese39. Which of the following measures has iMOVE taken to guarantee its high standards?A) Offering different language courses.B) Providing modern training facilities.C) Starting training courses overseas.D) Developing quality standards.40. The purpose of the passage is to ________.A) advertise the iMOVE databaseB) make German companies more popularC) hire overseas employees to work in GermanyD) encourage people to learn more foreign languagesTask 2Directions: This task is the same as Task 1. The 5 questions or unfinished statements arenumbered 41 to 45.It is so easy to earn rewards!A wide range of partners wherever you goTo make traveling even easier, Air France offers you Frequency Plus (常旅客里程奖励计划) through an extensive network of our partners. Together, they give you endless opportunities to earn Miles and a wide choice of Rewards, from airline tickets, hotel room-nights, car rentals and more.Partners in ChinaIf you are a Frequency Plus member registered in China, you have even more choices with rewards from our local partners. For more information, please contact your local Air France office.First rewards start as low as 20,000 Miles!Your Temporary Cardthat will make you get your first Reward, now.a) Show your Temporary Card and simply give your Card number when making a reservation and at check-in for your flight. In this way, you will begin to earn Miles even before receiving your Permanent Card.b) Fill in and return your personal membership (会员) application today. Your application must be received within 3 weeks of your first flight.Remember, you will enjoy an extra 3,000 Bonus Miles (额外奖励里程) for your first trip with Air France within 6 months of joining. Fly today and earn Rewards sooner!41. Air France carries out its Frequency Plus ________.A) through its reduced ticket pricesB) through its extensive network of partnersC) by providing convenient flight schedulesD) by offering excellent services on board42. In order to get the first reward, passengers must fly at least ________.A) for 6 monthsB) 20,000 milesC) 3,000 bonus MilesD) once in three weeks43. Passengers can begin to earn Miles ________.A) if they reserve tickets at a hotelB) if they buy tickets at the airportC) before receiving the Permanent CardD) after receiving the Permanent Card44. Passengers should send their application to Air France ________.A) upon receiving the application formB) within 3 weeks of their first flightC) before their first flight with Air FranceD) within 6 months of joining the program45. The extra bonus Miles for a passenger’s first trip with Air France within 6 months of joining is ________.A) 2,000 milesB) 3,000 milesC) 20,000 milesD) 30,000 milesTask 3Directions: The following is a Memo. After reading it, you are required to complete the outline below it (No.46 to No.50). You should write your answers briefly (in no more than three words) on the Answer Sheet correspondingly.The College of Business Management (CBM) is seeking new members to represent the college as Student Ambassadors (大使). will represent the college during the school year. Their term of service will begin during the autumn. Student Ambassadors will have the opportunity to cooperate with students at various activities throughout the school year.Purposes:1. Promote the College of Business Management.2. Improve leadership and communication skills.3. Assist in the recruitment of students to CBM.Qualifications and Requirements:1. Must currently be a full-time student in the College of Business Management.2. Must be available to assist with various recruitment activities.3. Must be able to contact students from various backgrounds.Application Procedure:1. Print a copy from our website.2. Complete the application form and return it to the Student Advising Office.For More Information:Contact Mark Davis at 472-2310 or stop by the Student Advising Office.Student Ambassadors WantedTerm of service: throughout the school yearTask s:1. represent the -46- as Student Ambassadors2. cooperate with students at -47-Purposes:1. promote CBM2. improve leadership and -48- skills3. assist in the recruitment activitiesQualifications: must be a -49- student in CBMApplication Procedure:1. print a copy2. complete the form3. return it to the -50-Task 4Directions: The following is a list of medical terms. After reading it, you are required to find the items equivalent to (与…等同) those given in Chinese in the table below. Then you should put the corresponding letters in the brackets on the Answer Sheet, numbered 51 through 55.A—physical check-upB—biological clockC—pulse rateD—high blood pressureE—sleep habitsF—over-the-counter (OTC) medicineG—side effectH—personality testI—operating roomJ—sense of well-beingK—face-liftL—compulsive over-eatingM—stress self-testN—plastic surgeonO—heart beatP—behavior therapyQ—terminal stageExamples: ( K ) 面部整容( N ) 整形外科医生51. ( ) 心跳( ) 非处方药52. ( ) 手术室( ) 强迫性过度饮食53. ( ) 副作用( ) 生物钟54. ( ) 高血压( ) 脉搏率55. ( ) 睡眠习惯( ) 体检Task 5Directions: The following is a business letter. After reading it, you should give brief answers to the 5 questions (No.56 to No.60) that follow. The answers (in no more than 3 words) should be written after the corresponding numbers on the Answer Sheet.Gmail (Google Email) NoticeSubject: Your Gmail account has been inactive for a long timeFrom “The Gmail Team” gmail-Time 2008-06-26 14:12:55ToHi there,We’ve noticed that you haven’t used your Gmail account, , for quite some time. In order to make Gmail better for our users, we’ve added a lot of things in the last few months and we hope you’ll want to start using your account again.Stop worrying about storage (存储量). has 5000 megabytes (兆字节) of free storage and our plan is to continue growing your storage by giving you more space as we are able.The Gmail interface (界面) is now available in 12 languages. If you don’t see the language you want on this list, loo k for it in the future because we’re going to keep adding more.We’re still working hard every day to build for you the best email service around. But to keep Gmail great for our users, we may have to close inactive accounts after 9 months. So, we hope you’ll give us another chance. To log in (登录) to your Gmail account, just visit: .Thanks.The Gmail Team56. Why does the Gmail Team write to the Gmail user?Because the user hasn’t used his / her Gmail ________ for quite some time.57. Wha t kind of storage the user’s account now has?It now has 5,000 megabytes of _____________________________ storage.58. How many languages are available in the Gmail interface now?___________________________________________________________.59. What may happen to the user’s account if it is inactive for 9 months?The Gmail team may have to _________________ the user’s account.60. What is the purpose of the Gmail team in sending this email?They hope the user will ___________________________ the account.Part IV Translation -- English into ChineseDirections: This part, numbered 61 through 65, is to test your ability to translate English into Chinese. After each of the sentences numbered 61 to 64, you will read four choices of suggested translation. You should choose the best translation and mark the corresponding letter on your Answer Sheet. And for the paragraph numbered 65, write your translation in the corresponding space on the Translation/ Composition Sheet.61. , training and personal qualities meet the requirements you set for the position of electrical engineer.A) 我认为我受的教育和培训，以及个人素质正是你们要求的，我会努力履行电气工程师的职务。

公共英语三级测试题及答案

公共英语三级测试题及答案SectionⅡ Reading Comprehension(40 minutes)Part ADirections:Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on the ANSWER SHEET by drawing a thick line across the corresponding letter in the brackets.Text IFifteen years ago, I entered the Boston Globe, which was a temple to me then. It wasn’t easy getting hired. But once you were there, I found, you were in.Globe jobs were for life-guaranteed until retirement. For 15 years I had prospered there — moving from an ordinary reporter to foreign correspondent and finally to senior editor. I would have a lifetime of security is I struck with it. Instead, I had made a decision to leave.I entered my boss’s office. Would he rage? I wondered. He had a famous temper. “Matt, we have to have a talk,” I began awkwardly. “I came to the Globe when I was twenty-four. Now I’m forty. There’s a lot I want to do in life. I’m resigning.”“To another paper?” he asked. I reached into my coat pocket, but didn’t say anything. I handed him a letter that explained everything. It said that I was leaving to start a new media company. We were at a rare turning point in history. I wanted to be directly engaged in the change. “I’m glad for you,” he said, quite out of my expectation. “I just came from a board of directors meeting and it was seventy-five percent discouraging news. Some of that we can deal with. But much of it we can’t, ” he went on. “I wish you all the luck in the world,” he concluded. “And if it doesn’t work out, remember, your star is always high here.”Then I went out of his office, walking through the newsroom for more good-byes. Everybody was saying congratulations. Everybody — even though I’d be risking all on an unfamiliar venture: all the financial security I had carefully built up.Later, I had a final talk with Bill Taylor, chairman and publisher of the Boston Globe. He had turned the Globe into a billion-dollar property. “I’m resigning, Bill, ”I said. He listened while I gave him the story.He wasn’t looking angry or dismayed either. After a pause, he said, “Golly, I wish I were in your shoes.”46. From the passage we know that the Globe is a famous _______.[A] newspaper [B] magazine[C]temple [ D ] church47. If the writer stayed with the Globe _________.[ A] he would be able to realize his lifetime dreams.[ B] he would let his long-cherished dreams fade away.[ C ] he would never have to worry about his future life.[ D] he would never be allowed to develop his ambitions.48. The writer wanted to resign because _________.[A] he had serious trouble with his boss.[ B ] he got underpaid at his job for the Globe.[ C ] he wanted to be engaged in the new media industry.[ D ] he had found a better paid job in a publishing house.49. When the writer decided to resign the Globe was faced with _______.[ A ] a trouble with its staff members[ B ] a shortage of qualified reporters[ C ] an unfavorable business situation[ D ]an uncontrollable business situation50. By “:I wish I were in your shoes.” (in the last paragraph) Bill Taylor meant that _______.[ A ] the writer was to fail.[ B] the writer was stupid[ C ] he would do the same if possible[D] he would reject the writer’s requestText 2Do you find it very difficult and painful to get up in the morning? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.During the hours when your labor through your work you may say that you’re “hot”. That’s true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues as: “Get up, Peter! You’ll be late for work again!”The possible explanation to the trouble is that Peter is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.You can’t change your energy cycle, but you can learn to make your life fit if better. Habit can help, Dr. Kleitman believes. Maybe you’re sleepy in the evening but feel you must stay up late anyway. Counteract your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning, but you have an important to do early in the day, rise before your usual hour. This won’t change your cycle, but you’ll get up steam and work better at your low point.Get off to a slow start which saves your energy. Get up with a leisurely yawn and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save requiring more energy or concentration for your sharper hours.51. If a person finds getting up early a problem, most probably ________.[A] he is a lazy person.[ B ] he refuses to follow his own energy cycle.[C] he is not sure when his energy is low.[D] he is at his peak in the afternoon or evening.52. Which of the following may lead to family quarrels according to the passage?[AJ Unawareness of energy cycles.[B] Familiar monologues.[C]A change in a family member’s energy cycle.[D] Attempts to control the energy cycle of other family members.53. If one wants to work efficiently at his low point in the morning, he should __________.[A]change his energy cycle[B] overcome his laziness[C]get up earlier than usual[D] go to bed earlier54. You are advised to rise with a yawn and stretch because it will __________.[A] help to keep your energy for the day’s work.[B] help you to control your temper early in the day[C] enable you to concentrate on your routine work[D] keep your energy your energy cycle under control all day55. Which of the following statements is NOT true?[A] Getting off to work with a minimum effort helps save one’s energy.[B] Dr. Kletman explains why people reach their peaks at different hours of day.[C] Habit helps a person adapt to his own energy cycle.[D] Children have energy cycles, too.Text 3There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a “greenhouse effect”— conserving heat reflected from the earth and raising the world's average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth's temperature — a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would mane agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible) Perhaps, if we are lucky enough, the two tendencies will offset each other and the world's temperature will stay about the same as it is now. Driven by economic profits, people neglect the damage on our environment caused by the “advanced civilization”. Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?56. As pointed out at the beginning of the passage, people used to think that air pollution _______.[ A ] cause widespread damage in the countryside[ B ] affected the entire eastern half of the United States[ C ] had damaged effect on health[ D ] existed merely in urban and industries areas57. As to the greenhouse effect, the author __________.[ A ] share the same view with the scientist.[ B ] is uncertain of its occurrence[ C ] rejects it as being ungrounded[ D ] thinks that it will destroy the world soon58. The word “offset” in the second paragraph could be replaced by _________.[ A] slip into [ B ] make up for[ C ] set up [ D ] catch up with59. It can be concluded that ____________.[ A ] raising the world's temperature only a few degrees would not do much harm to life on earth.[ B] lowering the world's temperature merely a few degrees would lead major farming areas to disaster.[C] almost no temperature variations have occurred over the past decade.[D] the world's temperature will remain constant in the years to come.60. This passage is primarily about __________.[A]the greenhouse effect……[ B ] the burning of fossil fuels……[C] the potential effect of air pollution.[ D] the likelihood of a new ice age.Part BDirections:Read the following article in which five people talk about their ideas of dieting. For questions 61 to 65 , -match name of each speaker to one of the statements (A to C ) given below. Mark your answers on your ANSWER SHEET.AbbeyYou can always recognize dieters from the sour expression on their faces. They spend most of their time turning their noses up at food. They are forever consulting calorie charts, gazing at themselves in mirrors, and leaping on to weighing-machines in the bathroom. They spend a lifetime fighting a losing battle against spreading hips, protruding tummies and double chins. What a miserable lot dieters are!MarlinI began making some dietary and lifestyles changes during my second year of college and have been eating this way ever since. I like the way I feel when I don't eat animal foods so much more than the pleasure I used to get from eating them. I have much more energy; I need less sleep; I feel calmer; I can maintain an ideal body weight without worrying about how much I eat, and I can think more clearly.MaggieDuring my first year of college, I gained forty pounds when I began throwing the javelin. For the next twenty years, I carried all of this extra weight and kidded myself that I was in good shape since that's what I weighed in college. Now that I've lost all that extra weight, I feel great! People say all the time, "Well, how do you live without eating cheeseburgers or this or that?" and I say, "You just don't. It' s not even an option. It's not that hard once you get on it. "BelindaIf you are on a diet, you're always hungry. You can't be hungry and happy at the same time. All the horrible concoctions you eat instead of food leave you permanently dissatisfied. A complete food it may be, but not quite as complete as juicy steak. So at least three times a day you will be exposed to temptation. How miserable to watch others tucking into piles of mouth-watering food while you munch a water biscuit and sip unsweetened lemon juice! And if hunger just proves too much for you, in the end you will lash out and devour five huge guilt-inducing cream cakes at a sitting. Then things will turn out to be even worse.WoodI went on diet when my doctor told me that my blood pressure tended to be high. Only at that time did I realize the danger of being overweight. Since I began making dietary changes in 1982, eating this way has become increasingly accepted. I don't feel I've lost something after dieting. Instead, I've got something valuable. That is good health.Now match each of the persons to the appropriate statement.Note: there are two extra statements.Statements61. Abbey [A] Being on a diet is a torture.62. Marlin [ B] I feel better with vegetarian food.63. Maggie [C] I lost weight after dieting.[ D] I began dieting for the sake of health.64. Belinda [E] Dieting enables people to enjoy life more.65. Wood [F] Dieting simply causes endless worries.[ G] Dieting does more harm than good to one' s health.Section IV Writing (40 minutes)You should write your responses to both parts on ANSWER SHEET 2.Part A66. Suppose you have got the news that the university of Science and Technology of China is offering a scholarship for chemistry majors and that you have just received an MS degree in chemistry and are eager to have a personal interview with Dr. Wu Han wei , the Chairman. Write a letter of application for the scholarship. Your letter should include:1. your performance at University2. your eagerness for the personal interview3. You should write approximately 100 words. Do not sign your own name at the end of your letter. Use “Wang Lin” instead. You do not need to write the address.Part B67. Write an essay of about 120 words on cell phone. Refer to the following points:1. explain the reasons why more people use cell phone nowadays2. Talk about the advantages or disadvantages of cell phones3. your conclusion46. A 第二段老板提到“是不是到另一家报纸去”根据此推测这是一家报社。

新员工三级安全教育测试试题(含答案)

新员工三级安全教育测试试题(含答案)一、单选题1. 计算机病毒是指（）。

A. 可以跟人类退化一样消失B. 可自动繁殖和传播的程序C. 绿颜色标记的程序D. 不能传播的程序答案：B2. setuid是指（）。

A. 用户执行程序时，使用setuid所设置的用户IDB. 用户取消进程所占用的CPUC. 用户退出系统的命令D. 用户修改文件属性的命令答案：A3. 下列关于网络安全和信息安全的说法中，错误的是（）。

A. 网络安全和信息安全的基本要求是保密性、完整性、可用性。

B. 信息安全的“保密性”的基础是加密技术。

C. 网络安全和信息安全是同一概念。

D. 信息安全的“完整性”包括数据的准确性和一致性。

答案：C二、多选题1. 关于密码学的说法，以下哪些是正确的？A. 所谓对称密码学，是指信息的发送者和接收者使用相同的密钥。

B. 所谓公钥密码学，是指由两个密钥构成的密码系统，公钥可以公开，而私钥则为自己所持有。

C. 所谓单向散列函数，是指将任意长度的消息压缩到某一固定长度的消息摘要的函数。

D. 所谓数字签名，是指用一种类似签名的方式保证信息的完整性和可靠性。

答案：ABCD2. 哪些行为会影响网站的安全性？A. 使用过期的软件和应用，或使用易于破解的密码。

B. 将重要数据明文传输，而不是使用加密协议。

C. 泄漏公司/组织的敏感信息。

D. 不清楚自己拥有哪些可以访问数据的用户和权限。

答案：ABCD三、判断题1. 公司将一些账呼名及其密码写在纸上放在办公桌上不会影响信息安全。

（）答案：错误2. 重复使用相同的密码不会影响信息安全。

（）答案：错误3. 长度为 6 位数字的密码强度一定比长度为 8 位的更弱。

（）答案：错误。

电工三级测试题+答案

电工三级测试题+答案一、单选题（共60题，每题1分，共60分）1、共发射极放大电路中，当负载电阻增大时，其电压放大倍数的值将A、增大B、迅速下降C、减小D、不变正确答案：A2、将输出信号从晶体管()引出的放大电路称为射极输出器A、集电极B、基极C、栅极D、发射极正确答案：D3、三相绕线式异步电动机采用频敏变阻器启动，当启动电流及启动转矩过时，应该（）频敏变阻器等效阻抗，以提高启动电流和启动转矩。

A、增加B、减小C、不改变D、增加或减小均可正确答案：B4、将变压器的一次绕组接交流电源，二次绕组开路，这种运行方式称为变压器的（）。

A、空载运行B、空载测试C、空载电流正确答案：A5、用直流单臂电桥测量电阻时，如果按下电源和检流计按钮后，指针向‘正’偏转，这时应（）比较臂的电阻值，反之亦然。

A、增加B、减少C、不变正确答案：A6、晶闸管逆变器输出交流电的频率由（）来决定的。

A、两组晶闸管的导通时间B、一组晶闸管的触发脉冲频率C、两组晶闸管的触发脉冲频率D、一组晶闸管的导通时间正确答案：C7、实验表明，成年男人的平均摆脱电流约为()mA，成年女人的约为10mA。

A、12B、16C、18D、20正确答案：B8、热继电器误动作是因为（）造成的。

A、电流整定值太大B、控制触点接错C、电流整定值太小正确答案：C9、十六进制数FFH转换为十进制数为（）。

A、255B、64C、256D、127正确答案：A10、变频调速中的变频电源是()之间的接口。

A、交流电机B、市电电源C、市电电源与交流电源D、市电电源与交流电机正确答案：D11、异步电动机空载启动幅值()负载时启动电流的幅值。

A、小于B、等于C、大于D、不等于正确答案：B12、由晶体管组成的共发射极、共基极、共集电极三种放大电路中，电压放大倍数最小的是()A、三者差不多B、共基极电路C、共集电极电路D、共发射极电路正确答案：C13、电工用硅钢板分为热轧和冷轧两种，硅钢板的主要特性是A、磁导率高B、磁导率低C、磁导率适中正确答案：A14、逻辑代数运算中，1+1＝A、1B、3C、2正确答案：A15、爪极式发电机的结构相似于（）A、直流发电机B、隐极式发电机C、凸极式发电机D、交流发电机正确答案：C16、下列逻辑判断错误的是A、若A+B=A,则B=0B、若AB=AC,则B=CC、若1+B=AB,则A=1D、若1+B=AB,则B=1正确答案：B17、数控装置工作基本正常后，可开始对各项()进行检查、确认和设定。

大学英语三级试题及答案

大学英语三级试题及答案Introduction:大学英语三级考试是中国大学生的一项重要英语水平测试之一。

本文将提供一些常见的三级试题以及相应的答案，帮助广大学生更好地备考和提高英语水平。

Listening Section:Part I: Questions and Responses1. A. To a cinema. B. Once a week. C. By bike. D. It doesn't matter.Answer: B解析：从问题中可以听到“ How often do you go to the cinema?”的答案是“That's my favourite pastime, and I go there every week."，因此选择B。

2. A. The math class. B. A difficult test. C. Too hard. D. The man is clever.Answer: B解析：问题中“Was the test difficult?” 的回答是“I guess it was the hardest on e I have ever had.”，因此选择B。

Part II: Talks3. What is being advertised?Answer: D解析：从对话中可以听到女士说“It's about a new online store selling different kinds of clothes, shoes, and accessories.”，选择D。

4. Where does the conversation most likely take place?Answer: C解析：女士说“I went to this fabulous new café in downtown.”，因此选择C。

家政服务员三级测试题及参考答案

家政服务员三级测试题及参考答案一、单选题（共48题，每题1分，共48分）1.下面几个身体部分中幼儿最先发展起来的是。

A、腿B、手和臂C、头部D、脚正确答案：C2.质量好的木耳的特点中不包括。

A、朵面乌黑光润，朵背略呈灰白色B、朵形大而适度，耳瓣伸展C、有盐霜泛出D、耳体轻，胀性好正确答案：C3.西式自助餐取菜时务必要记住“ ”的基本要求。

A、一次少取，多次取食B、一次多取，少次取食C、只拿自己喜欢吃的D、只取一次正确答案：A4.在选定段落中使各行文本的左边和右边留出相同数量的空白。

A、两端对齐B、分散对齐C、居中对齐D、右对齐正确答案：C5.正式社交场合，有人介绍不认识的人给你，你要说_ 。

A、Nice to meet you, too.B、How far is it from here?C、How do you do?D、How are you?正确答案：C6.按照原料在菜肴加工中的地位，可将食品原料分为类。

A、1B、5C、7D、3正确答案：D7.在对数码相机进行参数设定的过程中，错误的做法是。

A、拍摄模式选择调整到“电影片断拍摄”模式B、将曝光模式按钮调整到“自动”选项C、把闪光灯模式也选择为“自动”D、将功能模式按钮调整到“拍摄”模式正确答案：A8.岁的婴幼儿可逐步独立盥洗，洗手洗脸按照一定的顺进行。

A、1~2B、2~3C、0~1D、3~4正确答案：D9.一般呈橙黄色或棕色，油沫发黄，为小碎花泡，无味。

A、香油B、葵花籽油C、生菜子油D、棉籽油正确答案：D10.儿童的平行性集合关系期是在时候形成的。

A、小学一二年级B、学前班C、小学五六年级D、小学三四年级正确答案：D11.湘菜以 __流域、洞庭湖区和湘西山区的菜肴为代表发展而成。

A、珠江B、长江C、黄河D、湘江正确答案：D12.吸取了西餐的长处的菜系是。

A、粤菜B、川菜C、淮扬菜D、鲁菜正确答案：A13.一天之中大脑功能最好的时候是左右，这是一天中学习的黄金时间。

计算机三级机试试题及答案

计算机三级机试试题及答案一、选择题1. 下列关于计算机内存的说法，正确的是：A. 内存是计算机外部的存储设备，用于保存永久性数据。

B. 内存是计算机中用于执行程序和存储临时数据的设备。

C. 内存的容量越大，计算机的性能越低。

D. 内存的主要作用是用于连接计算机与外部设备之间的传输。

答案：B2. 关于操作系统的说法，错误的是：A. 操作系统是计算机硬件的扩展件。

B. 操作系统的主要功能是管理和控制计算机硬件和软件资源。

C. 操作系统提供了用户与计算机之间的接口。

D. 操作系统可以同时运行多个程序并实现程序之间的切换。

答案：A3. 在Python中，以下哪个函数用于打开一个文件？A. read()B. close()C. write()D. open()答案：D4. 下列哪个网络协议用于在因特网上传输网页数据？A. TCP/IPB. HTTPC. FTPD. SMTP答案：B5. 关于数据库的说法，正确的是：A. 数据库只能存储数值类型的数据。

B. 数据库是用于管理数据的集合。

C. 数据库只能存储文本类型的数据。

D. 数据库只能在本地计算机上使用。

答案：B二、填空题1. 在计算机科学中，CPU代表______。

答案：中央处理器2. HTML是一种用于创建和组织______的标记语言。

答案：网页3. Python是一种______级编程语言。

答案：高级4. SQL是用于操作______的语言。

答案：数据库5. SMTP是用于______的网络协议。

答案：邮件传输三、判断题根据下列各题，判断其对应的答案是否正确。

1. Java是一种编译型语言。

答案：正确2. 链表是一种线性数据结构。

答案：正确3. CSS是一种用于标记文本的语言。

答案：错误4. HTTPS是一种用于加密网络传输的协议。

答案：正确5. Windows操作系统是开源软件。

答案：错误四、简答题1. 请简要解释什么是算法。

答：算法是一系列解决问题的步骤和指令，用于描述计算机或其他计算设备执行特定任务的过程。

2024英语三级考试真题及答案

2024英语三级考试真题及答案English:One possible question that could appear on the 2024 English three-level exam is a reading comprehension passage followed by a set of questions. For example, the passage may discuss the impact of technology on modern society, exploring both the benefits and drawbacks of advancements in communication and automation. The questions that follow may ask test-takers to identify the main idea of the passage, analyze how specific examples support the author's argument, and draw conclusions about the overall message conveyed. To answer these questions successfully, candidates must demonstrate not only a strong command of English vocabulary and grammar but also the ability to critically analyze and interpret written texts.中文翻译:2024年英语三级考试可能出现的一道题目是阅读理解文章后面跟着一系列问题。

例如，文章可能讨论技术对现代社会的影响，探讨通信和自动化进步的利与弊。

电工三级试题库含答案

电工三级试题库含答案一、填空1、直流电机的转子是由电枢铁心、绕组换向器、转轴和风叶等部分组成，是进行能量转换的重要部分。

2、直流电动机的励磁方式可分为他励、并励、串励和复励。

3、直流电机在额定负载下运行时，其#等级不应超过1.5级。

4、三相变压器的额定容量，是给一次绕组放额定电压时，为保证部温升不超过额定值所允许输出的最大视在功率。

它等于二次绕组额定电压与额定电流乘积的V 3倍。

5、变压器在运行中，绕组中电流的热效应所引起的损耗通常称为铜耗；交变磁场在铁心中所引起的损耗可分为磁滞损耗和涡流损耗，合称为铁耗。

6、由于变压器短路试验时电流较大，而所加电压却很低，所以一般在高压侧加压，使低压侧短路。

7、交流电机绕组单元嵌在槽内的部分叫做有效部分，槽外部分端叫做部。

8、三相异步电动机旋转磁场的转向是由电源的相序决定的，运行中若旋转磁场的转向改变了，转子的转向随之改变。

9、Y系列交流电机的绝缘等级为B级。

10、同步电机的转子有凸极和隐极两种，一般工厂用的柴油发电机和同步电动机的转子为凸式。

11、三相异步电动机的转速取决于磁场极对数P、转差率S和电源频率f O12、绕组烘干常采用下列三种方法烘房烘干法、灯泡烘干法、电流烘干法。

13、电弧的产生是由于触点间隙中的气体被游离，产生大量的电子和离子，使绝缘的气体变成了导体。

电流通过这个游离区时所消耗的电能转变为热能和光能，因此线错误;(5)电机绝缘老化发出光和热的效应。

14、RL1系列螺旋式熔断器，熔体内部充满石英砂。

在切断电流时，石英砂能迅速将电弧熄灭。

15、接触器触点开距、是接触点在完全分开时动静触点之间的最短距离。

16、直流接触器主触点在分析直流电路产生的电弧比交流电弧？难于熄灭，所以通常用灭弧装置。

17、桥式起重机设立零位保护的目的是防止当控制器的??不在零位，电源断电后又重新送电时，电动机起动而发生事故。

18、磁电子仪表的固定部分主要有??和??,转子部分主要由？？、指针和组成。