答题纸B卷
2023高一生物B卷
机密★考试结束前2022学年第一学期温州市高一期末教学质量统一检测生物学试题(B 卷)本试卷分选择题和非选择题两部分,共8页,满分100分,考试时间90分钟。
考生注意:1.考生答题前,务必将自己的姓名、准考证号用黑色字迹的签字笔或钢笔填写在答题卷上。
2.答题时,请按照答题纸上“注意事项”的要求,在答题纸相应的位置上规范作答,在本试题卷上的作答一律无效。
3.非选择题的答案必须使用黑色字迹的签字笔或钢笔写在答题纸上相应区域内,作图时可先用2B 铅笔,确定后必须使用黑色字迹的签字笔或钢笔描黑,答案写在本试题卷上无效。
选择题部分一、选择题(本大题共25小题,每小题2分,共50分。
每小题列出的四个备选项中只有一个是符合题目要求的,不选、多选、错选均不得分)1.诺贝尔生理学或医学奖获得者屠呦呦在抗疟药物研发中,发现了蒿甲醚C 16H 26O 5,下列与蒿甲醚的元素组成完全相同的物质是A.胰岛素B.蔗糖C.叶绿素aD.尿嘧啶2.市场上一些广告语存在科学性错误,下列广告语表述科学的是A.“XX”面包没有甜味,不含任何糖类,有助于减肥B.“XX”鱼肝油含维生素D,有助于宝宝骨骼健康生长C.“XX”特饮含有多种无机盐,能有效补充人体运动时消耗的能量D.“XX”核酸口服液可修复受损DNA,为人体补充优质的遗传物质3.李白有诗云:“君不见高堂明镜悲白发,朝如青丝暮成雪”。
从细胞角度分析导致这变化的主要原因是A.细胞分裂B.细胞癌变C.细胞衰老D.细胞凋亡4.植物根尖各种细胞都是由分生区细胞分化形成的,在此过程中不变的是A.细胞的形态和结构B.细胞器的种类和数量C.全能性的表达能力D.细胞核内的遗传物质5.许多生物具有易区分的相对性状,下列不属于相对性状的是A.豌豆的绿豆荚和黄子叶B.曼陀罗的紫茎和绿茎C.小麦的抗锈病和不抗锈病D.金鱼草的红花和白花6.淀粉、油脂、蛋白质和核酸是细胞中重要的有机物,关于这4类有机物的叙述正确的是A.都能被相应的酶催化水解B.都由结构相同的基本单位构成C.都参与组成细胞膜结构D.都是人体细胞中的能源物质7.动物细胞中,能消化多糖、蛋白质、脂质、核酸等物质的细胞器是A.叶绿体B.液泡C.溶酶体D.中心体8.细胞内的无机物主要是水和无机盐,下列关于水和无机盐的叙述,错误的是A.水帮助人体运输营养物质B.水参与人体体温的调节C.人体缺铁会导致血红蛋白合成受阻D.人体血液中Ca 2+浓度过高会导致抽搐9.关于生物组织中还原糖、油脂、蛋白质的鉴定实验,下列叙述正确的是A.检测还原糖时,不需要用到光学显微镜B.检测还原糖、蛋白质都需要进行水浴加热C.检测油脂实验中,材料染色后用清水洗去多余的染液D.检测蛋白质通常用双缩脲试剂,其中A 液和B 液需等体积混合10.细胞膜控制细胞与周围环境的联系,下列关于细胞膜结构和功能叙述,错误的是A.动植物细胞的边界是细胞膜B.细胞膜内外结构具有不对称性C.胆固醇结合于磷脂分子头部而伸向胞外D.动物体内的激素可参与细胞间的信息传递11.人体细胞中ATP-ADP 循环如图所示,下列有关叙述错误的是ATPADP+Pi 能量来自放能反应能量用于吸能反应①②第11题图A.过程①发生的场所是线粒体、叶绿体B.过程②为肌肉细胞的收缩直接提供能量C.ATP 中远离腺苷的高能磷酸键比较容易断裂D.ATP-ADP 循环速度很快,ATP 含量相对稳定12.以下对“细胞是生命的单位”的理解准确的是A.草履虫和黑藻都属于单细胞生物B.所有的细胞必定由已存在的细胞产生C.细胞都以DNA 或RNA 作为遗传物质D.多细胞生物都由形态功能相同的细胞构成13.骨架或支架在细胞的分子组成和结构中起重要作用,下列相关叙述错误的是A.核基质为细胞核提供支架B.细胞骨架是由蛋白质纤维组成的网架结构C.碳链构成蛋白质、核酸等生物大分子的骨架D.磷脂双分子层是细胞膜的基本支架,细胞器膜无此支架①②第17题图14.伞藻属是海生的单细胞藻类,可分为伞帽、伞柄和假根3部分,细胞核位于伞柄基部的假根内。
2023年全国中考物理综合练习试卷B卷附解析
2023年全国中考物理综合练习试卷B卷学校:__________ 姓名:__________ 班级:__________ 考号:__________注意事项:1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上一、单选题1.2007年5月23日,重庆开县义和镇兴业村小学校舍遭遇雷电的袭击,7名小学生因雷击死亡,44名学生受伤。
关于雷电的说法,正确的是 ........................................................ ()A.雷电可以把电能转化为内能和机械能B.雷电会产生强烈的电磁波,但不会影响电器的正常工作C.雷电电流、电压都很小,托持续时间也很短D.在野外,雷雨发生时,可以到大树下躲雨2.知识价值的体现之一是它可以让我们避免许多可以避免的事故。
在以下安全提示中与摩擦力知识有关的是................................................................................................................. ()A.车未停稳,请勿下车B.在地铁车站站台上候车的人必须站在安全线以外C.雨天路滑,驾驶员小心驾驶D.不要在太阳光下看书3.甲、乙两种物质,质量之比是3∶5,比热之比是3∶2,升高相同的温度,则吸收的热量之比是()A.9∶10 B.10∶9 C.2∶5 D.5∶24.下列情形中,浮力增大的是....................................................................................... ()A.游泳者从海水中走上沙滩B.轮船从长江驶入大海C.海面下的潜艇在下潜D.“微山湖”号补给舰在码头装载货物5.关于重力,下面哪个说法是正确的.........................................................()A.没有支撑的物体都要下落,是由于受到地球的吸引,这个力叫重力B.重力在物体上的作用点叫重心,物体的重心一定在物体上C.重力的方向是竖直向下的,地球表面的物体所受重力方向可能不互相平行D.重力的方向是竖直向下的,因此地球表面物体所受重力方向都互相平行6.欲测教室中窗玻璃的厚度,应选用的刻度尺是:()A.最小分度是毫米的刻度尺; B.最小分度是厘米的刻度尺;C.最小分度是分米的刻度尺; D.以上三种刻度尺都合适.7.工人师傅四次测量同一工件的质量,分别为43.2g、43.3g、43.1g、43.3g。
英语i2期末试题 b卷.doc
•英语I (2)期末考试B卷第一部分交际用语(共计10分,每小题2分)1-5题:阅读下面的小对话,从A、B、C三个选项中选出一个能填入空白处的最佳选项, 并在答题纸上写出所选的字母符号。
1-- What time will the next train leave?A.Five peopleB.At 8. 19C.At the railway station2.-- Hello, Xiaoyan. How was the party?A.I' m fine, thank youB.It was Friday .C.Hi, Jack. We had a great time3.一 What would you like to drink?A.Nice to meet youB.I'd like a roast chicken, pleaseC. A coca—cola for me, please4.一 1' m very tired. I' ve just finished work.A.Well, you' d better go home and have a good restB.Oh, great!Congratulations 。
C.Oko I' 11 give it to you tomorrow5.~1 went to a fashion show last night.A.What was it like,B.Why notC.. Do you know him well第二部分词汇与结构(共计40分,每小题2分)6-25题:阅读下面的句子,从A、B、C三个选项中选出一个能填入空白处的最佳选项, 并在答题纸上写出所选的字母符号。
6.A: F m sorry to have kept you waitin9.B: Oh, not at all here only a few minutes.A.will beB. wasC. have been7.A: Thank you for lending me your bicycle.B: You' re welcome. But could you to me tomorrow?A.give back itB. give it backC. get back8.I along the street when he shouted at me.A. walkedB. was walkingC. walk9.Tom wants to buy the book, is very interestin9.A. thatB. whoC. which10.The bag was rather expensive, but I bought it.A. anywayB. even thoughC. any way11.stole his camera while he is lying on the beach.A. AnyoneB. SomeoneC. Everyone12.He stopped homework when dinner was ready.A. to doB. dOC. doing13.A: What do you think of the film?B. 1 think it is great.A. reallyB. veryC.most14.Jenny, you' ve got beautiful eyes. Do you your mother or father?A. 100k afterB. take afterC. 100k at15.He has gone out.A • now B. vetC. just16.Don' t him. He is reading an important letter now.A • disturb B. disturbingC. to disturb17.If you are interested in this job, you can it.A • ask for B. apply forC. 100k for18 • I buy presents for my English friends to thank t hem for all their helD.A. canB. mustC. have to19.I told the designers that we needed to have the website.A • to redesign B. redesigningC. redesigned20.These shopping bags are. Do you like them?A. oursB. ourC. my21.Beijing is 1200 kilometres Shanghai.A. ofB. toC. from22.I a flat if 1 won the lottery.A. would buyB. will buvC. buy23.the rain, they went to work as usual.A. AlthoughB. In spite ofC. While24 • I have no idea who stole his wallet. It anyone.A • must have been B. should have beenC. could have been25.I haven' t seen such an interesting film.A • for a long time B. a long time agoC. since a long time第三部分阅读理解(共计20分)26-30®:阅读下列短文,从A、B、C三个选项中选出一个正确答案,并在答题纸上写出所选的字母符号。
微观经济学期中考试试题(B卷)
2014-2015学年第二学期微观经济学期中考试试题一、判断正误(每小题1分,共40分,在答题纸上对应的题号下打√或×)1.无差异曲线的斜率为固定常数时,表明两种商品是完全互补的。
2.基数效用论的分析方法包括边际效用分析和无差异曲线分析方法。
3.所有的吉芬物品都是低档物品。
4.个人需求曲线上的任何一点都代表着消费者的最大满足状态。
5.微观经济学的研究对象是包括单个消费者、单个生产者、单个市场在内的个体经济单位。
6.在同一条无差异曲线上,任意两点对应的两种商品不同数量组合所能带来的边际效用相等。
7.若MUx/Px>MUy/Py ,消费者应增加X商品的购买,减少Y商品的购买,最终可实现效用最大化。
8.在一种可变投入生产函数条件下,可变要素合理投入区域应在AP>MP>0的阶段。
9.AP曲线与MP曲线相交于MP曲线的最高点。
10.等产量曲线表示的是用同样数量劳动和资本生产不同的产量。
11.边际产量递减,平均产量也递减。
12.需求缺乏弹性的商品的价格与销售收入呈同方向变动关系。
13.边际报酬递减规律决定MP曲线呈现先上升后下降的走势。
14.在一种可变投入的生产函数中,企业处在合理投入区域时,MC必然递减。
15.在规模报酬不变阶段,若劳动的使用量增加10% ,资本的使用量不变,则产出增加10%。
16.正常利润是显成本的一部分。
17.成本函数的形式为C = wL + rK 。
18.LAC可划分成不变成本和可变成本。
19.在LAC曲线下降的阶段,LAC是SAC最低点的连线。
20.LAC曲线呈U型的原因是边际报酬递减规律的作用。
21.在规模内在经济作用下LAC曲线呈下降趋势。
22.MP处于最高点时,AVC处于最低点。
23.当消费者的收入发生变化时,会引起需求曲线的移动。
24.规模报酬递减,意味着长期平均成本下降。
25.短期内,随着产量的增加,AFC会变得越来越小,于是,AC曲线和AVC曲线之间的垂直距离越来越小,但决不会相交。
马克思主义基本原理第一学期B卷
《马克思主义哲学原理》统考试题(B卷)专业年级__________________姓名_______________学号_____________成绩_____________注意:答案要求全部写在答题纸上一、单项选择题:(在每小题的备选答案中选出一个正确答案,填在答题纸的相应题号的空格内。
每小题2分,共20分)1、哲学上的两大基本派别是指()。
A、主观唯心主义和客观唯心主义B、辩证法和形而上学C、唯物主义和唯心主义D、可知论和不可知论2、设想没有物质的运动的观点是()。
A、形而上学唯物主义B、唯心主义C、庸俗唯物主义D、诡辩论3、质量互变规律()。
A、只适用于自然界B、只适用于人类社会C、不适用思维领域D、是自然、社会和人类思维的普遍规律4、“感亦须待有物,有物则有感,无物则何所感?”这是在认识论上坚持了A、可知论B、唯物论的反映论C、辩证法D、唯心论的感觉论5、绝对真理是指()。
A、绝对正确的认识B、人类追求的永恒真理C、真理中所包含的不依赖于主体的客观内容D、绝对不变的真理6、区分生产关系基本类型的标志是()。
A、生产过程中各方面的关系B、产品的分配形式C、生产资料所有制的性质D、人们在生产中的地位7、人口因素是社会物质生活条件之一,它对社会发展()。
A、起加速作用B、起延缓作用C、有影响但不起决定作用D、起决定作用8、意识是客观对象的近似的反映,说明()。
A、意识都是不正确的B、意识有主观特征C、意识有片面性D、意识的内容可以脱离客观存在9、唯物辩证法的总特征是()。
A、联系的观点和发展的观点B、否定的观点C、矛盾的观点D、物质第一性,意识第二性的观点10、“万物皆备于我”是A、形而上学的观点B、客观唯心主义的观点C、唯心主义辩证法的观点D、主观唯心主义的观点二、双项选择题:(在每小题的五个备选答案中选出两个正确的答案,填在答题纸的相应题号的空格内,正确答案未选全或有选错的该小题无分。
每题2分,共20分)1、一切哲学都是()。
语法试题B卷和答题纸
宿迁学院2009—2010学年度第二学期考试《英语语法》试卷(闭卷)(试卷编号:B )出卷人:丁后银张淑辉周评Part I Multiple Choice: There are 20 sentences in this section. For each question or statement there are 4 choices marked A, B, C, or D. You should make the correct choice and mark the corresponding letter on the Answer Sheet(20%)1. He suffers from diabetes, which _______ a kind of chronic disease.A. isB. areC. wereD. was2. The United Nations _______ formed in San Francisco in 1945.A. isB. wasC. wereD. are3. Cold cereal and milk _______ Dad’s favorite pick-me-up.A. wereB. areC. isD. was4. Every flower and every bush _______ to be cut down.A. wereB. areC. wasD. is5. I don’t mind _______ criticizing me so severely.A. himB. hisC. whoD. she6. The family resisted the idea of _______leaving home.A. whoB. sheC. whomeverD. her7. A crisis often occurs even in the best ________ family.A. regulatingB. regulatedC. regulatesD. regulation8. To climb mountains ________ courage.A. requiringB. requireC. requiresD. required9. After briefly _______ the history of the author, Prof. Li turned to the novel itself immediately.A. dipping inB. dipping atC. dipping intoD. dipping to10.That guy was ________ than I thought he was.A. as much of a foolB. enough of a foolC. fool enoughD. less of a fool11. It is impossible for her ____ the car with cash.A. boughtB. buyingC. buyD. to buy12. --- Do you like dancing or singing? --- ____.A. Yes, I doB. No, I do n’tC. I like dancingD. Sorry, I don’t13. Which do you like ____, apples ____ oranges?A. better; orB. better; andC. well; orD. more; and14. He asked me ____ that electric fan.A. how many I paidB. how much I paid forC. how much I paidD. how many I paid for15. The Emperor ordered that the wonderful cloth ____ for him at once.A. to be wovenB. be wovenC. shouldD. would be woven16.What those people were doing seemed quite strange ____ me.A. forB. atC. onD. to17.This village is well known ____ its beautiful sights.A. toB. asC. forD. by18.John can’t play football well. Tom does even ____.A. more badlyB. more badC. worseD. more worse19.With his friends gone, he felt ____.A. aloneB. even more aloneC. still lonelyD. even more lonely20.The sitting room is ____ the bedroom.A. twice the size asB. the size twice thanC. twice the size ofD. the size twice ofwith the proper form of the word given in the brackets. Write the word orwords in the corresponding space on the Answer Sheet. (10%)21.He talks as if he ______ (do) all the work himself, but in fact Tom and I did most of it.22.I can move this table ______ (easy).23.Always hold ______ (firm) to your beliefs.24.If you add six and three, you ______ (get) nine.25.The school ______ (close) if it snows, don’t they?26.The Government set up a Prices and Incomes Board with a View to ______ (restrain) both price andwage demands.27.She was in a tremendous hurry to catch the train. We had a ______ (hurry) conversation before she leftthe house.28.Will your ______ (increase) salary enable you to buy a new car?29.He was in low spirits and even considered ______ (go) away.30.The question ______ (discuss) at the next meeting will be a hard nut to crack.space on the Answer Sheet. (20%)31.In front of him stood a man.The man held a gun in his hand. (合并句子)_______________________________________________________________________________32.Although he was always helpful, he was not much liked by people. (改为无动词分句)_______________________________________________________________________________33.People suspect that smoking has something to do with cancer. This rests on several kinds of evidence. ___(改为同位语从句)____________________________________________________________34.You went to sleep during my lecture. This fact suggests that you should go to bed earlier at night.____(改为同位语从句)__________________________________________________________35.A major burn is one in which at least 20 percent of skin is lost. When a victim suffers a major burn,damage usually extends far beyond the burn site. (合并句子)_______________________________________________________________________________36.A dry lighting storm is a thunderstorm without rain. One such storm started a fire in a remote part ofthe forest in August. (合并句子)_______________________________________________________________________________37.Walking into the room, I saw Grandpa.He was sitting at the desk.His newspaper was spread before him. (合并句子)_______________________________________________________________________________38.I know that I can always call upon you for support. That is a great comfort to me. (合并句子)_______________________________________________________________________________39.They were building a bridge across the river. The bridge was intended to carry a great deal of traffic.___(合并句子)________________________________________________________________40.Yesterday I went skating. That is something I hadn’t done for years. (合并句子)_______________________________________________________________________________41. After his homework was done, Jim decided to go and see the play. (改为“独立结构”)42.He said, “The sausages will go off if you don’t cook them today.”(改为间接引语)43.As her shirt was caught on a nail, she could not move. (改为“独立结构”)44. He will go to the clinic tomorrow so that he will be examined by the doctor.(改为不定式分句表目的)45. We lived in Paris last year. (改为强调in Paris的强调句)46. My original question is why he did it at all. It has not been answered.(用同位语合并句子)47. Anyone who did not hear the noise must have been stone-deaf. (改为-ing分词分句)48. He opened the window so that he might get some fresh air. (不定式分句表目的)49. The doctor had scarcely got into bed when he was called out again. (改为倒装句)50. Although he was clever, he failed the exam. (改为倒装让步分句)there are four choices marked A, B, C and D) on the right side of the paper.You should choose the ONE that best fits into the passage. Then write thecorresponding letter on the Answer Sheet.(20%)In every cultivated language, there are two great classes of words which, taken together, comprise thewhole vocabulary. First, there are those words ___51___ which we become acquainted in dailyconversation, which we ___52___, that is to say, from the ___53___ of our own family and from ourfamiliar associates, and ___54___ we should know and use ___55___ we could not read or write. They___56___ the common things of life, and are the stock in trade of all who ___57___ the language. Such words may be called “popular”, since they belong to the people ___58___ and are not the exclusive ___59___ of a limited class. On the other hand, our language ___60___ a multitude of words which are comparatively ___61___ used in ordinary conversation. Their meanings are known to every educated person, but there is little ___62___ to use them at home or in the market-place. Our ___63___ acquaintance with them comes not from our mother's ___64___ or from the talk of our school-mates, ___65___ from books that we read, lectures that we ___66___, or the more ___67___ conversation of highly educated speakers who are discussing some particular ___68___ in a style appropriately elevated above the habitual ___69___ of everyday life. Such words are called “learned”, and the ___70___ between them and the “popular” words is of great importance to a right understanding of linguistic process.51.A. at B. with C. by D. through52.A. study B. imitate C. stimulate D. learn53.A. mates B. relatives C. members D. fellows54.A. which B. that C. those D. ones55.A. even B. despite C. even if D. in spite of56.A. mind B. concern C. care D. involve57.A. hire B. apply C. adopt D. use58.A. in public B. at most C. at large D. at best59.A. right B. privilege C. share D. possession60.A. consists B. comprises C. constitutes D. composes61.A. seldom B. much C. never D. often62.A. prospect B. way C. reason D. necessity63.A. primary B. first C. principal D. prior64.A. tips B. mouth C. lips D. tongue65.A. besides B. and C. or D. but66.A. hear of B. attend C. hear from D. listen67.A. former B. formula C. formal D. formative68.A. theme B. topic C. idea D. point69.A. border B. link C. degree D. extent70. A. diversion B. distinction C. diversity D. similaritythere are altogether 10 mistakes, one in each numbered line. You may have tochange a work, add a word or delete a word. Mark out the mistakes and putthe corrections in the blanks provided. If you change a word, cross it out andwrite the correct word in the corresponding blank. If you add a word, put an insertion mark (∧) inthe right place and write the missing word in the blank. If you delete a word, cross it out. (10%) Jungle country is not friendly to man, but it ispossible to survive there. You must have the right equipmentand you must know a lot important things about ____71____ woodcraft(森林知识). Then your choices of staying living ____72____are very good.No one should go into the jungle without the rightequipments. You need lightweight clothing, a good sheath ____73____knife or machete, and a compass. Fishhooks and a line, arifle and ammunition, matches in a waterproof container,and a poncho(斗篷)are necessary too. Such is a mosquito net ____74____to protect the head.In the jungle you can get hopeless lost within ____75____five minutes after leaving a knowing landmark. That is ____76____why you should always carry a compass. In open country,during the day, you can tell which way to go by studyingthe sun. At night the stars are sure of guides to direction ____77____But in most places the jungle rooftop is so thickthat this is impossible to see the sun or the stars. Again ____78____and again you must check the position by the compass.Keep alert. Watch the ground in front of you carefully.Stop and listen now and again. Avoid haste, and restoften. In a place where is hot and humid, the person who ____79____ sets a fast pace will soon become tired. A steady, evenpace is wisest on the long run. ____80____81.要不是明天我们有测验,我今晚就去看电影了。
南京大学管理专业《管理学原理》测试B卷及答案
《管理学原理》考试(B 卷)说明: 1.适用班级:2.闭卷,满分100分。
考试时间:共120分钟。
3.答案一律写在答题纸上,否则,不计分数。
答题纸正反面均可答题。
一、选择题(每题有且只有一个答案最合题意。
共8题,每题1分,共8分) 1. 某公司的组织机构设置包括生产部、营销部、采购部、财务部和人力资源部,则该公司采用的部门划分方式是 ( )A. 按产品划分B. 按职能划分C. 按顾客划分D. 按工艺划分 2. 下列哪个决策过程的先后顺序是正确的?( )A. 发现问题―确定目标―拟订方案―比较选择方案―执行方案―检查处理B. 发现问题―拟订方案―确定目标―比较选择方案―执行方案―检查处理C. 发现问题―确定目标―比较选择方案―拟订方案―执行方案―检查处理D. 发现问题―拟订方案―确定目标―执行方案―比较选择方案―检查处理 3.被称为是科学管理之父( )A.亚当·斯密B.泰罗C.赫伯特·西蒙D.亨利·法约尔4. 汪力是一民营企业的职员,他工作中经常接到来自上边的两个有时甚至相互冲突的命令。
以下哪种说法指出了导致这一现象的最本质原因?( ) A.该公司在组织设计上采取了职能型结构 B.该公司在组织运作中出现了越级指挥问题 C.该公司的组织层次设计过多D.该公司组织运行中有意或无意地违背了统一指挥原则5. 俗话说:“一山难容二虎”、“一条船不能有二个船长”。
从管理的角度看,对这些话的如下解释,哪一种最恰当? ( )A 在领导班子中,如果有多个固执己见的人物最终会降低管理效率。
B 对于需要高度集权管理的组织不能允许有多个直线领导核心。
C 一个组织中的能人太多必然会造成内耗增加从而导致效率下降。
D 组织中不能允许存在两种以上的观点,否则易造成管理混乱。
6. 假设你召集下属开会,研究解决领导所布置的一项紧急任务,结果有位比较罗嗦的人在会场大讲特讲与主题无关的理论,耽误了很多时间。
国际经济学B卷
《国际经济学》试题B注:答案请写在答题纸上。
一、单项选择题(下列每小题的备选答案中,只有一个符合题意的正确答案,多选、错选、不选均不得分。
本题共10个小题,每小题1分,共10分)1. 关税同盟的重要特点是()A 对内自由,对外保护B 对外自由,对内保护C 对内外均自由D对内外均保护2.里昂惕夫在对以下哪个国家的对外贸易商品结构进行赫克歇尔—俄林得贸易理论的实证分析过程中得到的。
()A 中国B 美国C 英国D 葡萄牙3. 小国的最佳关税水平为()。
A. 禁止性关税B. 有效关税C. 零关税D. 无法确定4. 下列属于保护贸易学说的理论有( )。
A. 幼稚工业理论B. 比较成本论C. 绝对成本论D.资源禀赋论5. 重商主义的基本观点是一种( )A.国际金融的“乘数理论”B.国际贸易的“零和理论”C.国际金融的“杠杆原理”D.国际贸易的“绝对优势理论”6.下列不属于政府对出口商品提供补贴范围的是()。
A.暂时免税进口B.退还进口税C.免征出口税D.自动出口配额7.成员国之间完全取消关税或其他贸易壁垒,并撤销成员国之间的关境,合并成为一个统一的对外共同关境,对非成员国实行统一的关税税率,这种形式被称作()。
A.自由贸易区B.关税同盟C.经济同盟D.完全经济一体化8.固定汇率制度包括长期不变的固定汇率制度和()。
A.钉住汇率制B.钉住水平汇率带C.可调整的固定汇率制度D.传统的固定汇率制度9.在浮动汇率制度下,当资本完全自由流动时,财政政策是()。
A.完全有效B.完全无效C.有一定的效果D.不确定10. 根据内外均衡理论,如果一国希望同时达到内部均衡和外部均衡的目标,及必须运用()。
A 支出调整政策B 支出转换政策C 支出调整政策和支出转换政策D 财政政策和货币政策二、多项选择题(下列每小题的备选答案中,有两个或两个以上符合题意的正确答案,多选、少选、错选、不选均不得分。
本题共10个小题,每小题2分,共20分)11. 贸易条件又分为()。
《建筑工程招投标与合同管理》试卷B
???职业技术学院2013~2014学年第1学期考试试卷B卷课程名称:建筑工程招投标与合同管理命题者:考试方式:闭卷适用班级:考试班级: 姓名: 学号:(所有答题内容请写在答题纸上并标明题号,写在试卷上无效)一、单选题(每小题 2 分,共20 分)1.下列关于招标代理的叙述中,错误的是( )。
A.招标人有权自行选择招标代理机构,委托其办理招标事宜B.招标人具有编制招标文件和组织评标能力的,可以自行办理招标事宜C.任何单位和个人不得以任何方式为招标人指定招标代理机构D.建设行政主管部门可以为招标人指定招标代理机构2.招标程序有①成立招标组织;②发布招标公告或发出招标邀请书;③编制招标文件和标底;④组织投标单位踏勘现场,并对招标文件答疑;⑤对投标单位进行资质审查,并将审查结果通知各申请投标者;⑥发售投标文件。
则下列招标程序排序正确的是( )。
A.①②③⑤④⑥ B.①③②⑥⑤④C.①③②⑤⑥④ D.①⑤⑥②③④3.单项金额在( )万元以上的设计项目必须招标。
A、50 B. 100 C. 200 D. 30004.根据我国《招标投标法》规定,招标人需要对发出的招标文件进行澄清或修改时,应当在招标文件要求提交投标文件的截止时间至少( )天前,以书面形式通知所有招标文件收受人。
A.10B.15C.20D.305.公开招标在开标时,应当由( )。
A.招标监督机构主持,所有投标人自愿参加B.招标监督机构主持,投标人自愿参加C.招标人主持,所有投标人均应参加 D.招标人主持,投标人自愿参加6.评标委员会为( )人以上的单数。
A.5B.7C.9D.37.投标保证金有效期应当超出投标有效期( )。
A.15天B.21天C.30天D.45天8.下列选项中,不属于投标人实施的不正当行为的是( )。
A.投标人以低于成本的报价竞标B.招标者预先内定中标者,在确定中标者时以此决定取舍C.投标人以高于成本10%以上的报价竞标D.投标者之间进行内部竞价,内定中标人,然后再参加投标9.据施工合同示范文本规定,因承包人的原因不能按期开工,( )后推迟开工日期.A.需承包人书面通知工程师B.应经建设行政主管部门批准C.应经工程师批准D.需承包人书面通知发包人10.下列关于中标通知书的表述,正确的是( )。
机械设计期末考试试卷-机自15级B卷(含答案)
2015-2016学年第一学期期末 考试试题 B 卷第 1 页 共 10 页考试科目:机械设计 考试时间:120分钟 试卷总分: 100分 考试方式: 闭卷考试 考生系: 机械学院 (注:答案集中填于1-4页答题纸)一、填空题(每题1分,共20分)1. 防止螺旋副在受载时发生相对转动。
2. 正多边型 、多边形 。
3. 降低摩擦阻力 、 散热、减小接触应力、吸收振动、防止锈蚀。
4. 普通螺纹 、60α=。
5. 轴径 、 压溃 。
6. < 。
7. 打滑 。
8. 啮合传动 。
9. 摩擦损耗效率 。
10. 计算功率、 小带轮转速 。
11. 调质 、 正火 。
12. 粘度降低(或减少) 、粘度增加(或变大) 。
13. 12υυυ>>。
二、选择题(每题1分,共15分)三、判断题(每题1分,共10分)(共25分)1.(3分)答:机器的三个基本组成部分是:原动机部分、执行部分和传动部分。
传动装置的作用:介于机器的原动机和执行部分之间,改变原动机提供的运动和动力参数,以满足执行部分的要求。
2.(3分)答:在相互连接方面,机器与零件有着相互制约的关系;在相对运动方面,机器中各个零件的运动需要满足整个机器运动规律的要求;在机器的性能方面,机器的整体性能依赖于各个零件的性能,而每个零件的设计或选择又和机器整机的性能要求分不开。
3.(5分)【答】带传动中的弹性滑动是由于带松边和紧边拉力不同,导致带的弹性变形并引起带与带轮之间发生相对微小滑动产生的,是带传动固有的物理现象。
带传动中由于工作载荷超过临界值并进一步增大时,带与带轮间将产生显著的相对滑动,这种现象称为打滑。
打滑将使带的磨损加剧,从动轮转速急剧降低,甚至使传动失效,这种情况应当避免。
4.(5分)答:预紧可夹紧被连接件,使连接接合面产生压紧力(即预紧力),它能防止被连接件的分离、相对滑移或接合面开缝。
适当的预紧力,可提高连接的可靠性、紧密性。
2023-2024秋统编九上语文第一次月考B卷(范围1-3单元)(上海卷)(考试版+解析版)
2023-2024秋统编九上语文第一次月考B卷(范围1-3单元)(上海卷)(考试版+解析版)2023-2024学年九年级语文上学期第一次月考B卷·重点难点过关测(考试时间:100分钟试卷满分:150分)考生注意:1.本场考试时间100 分钟,试卷共6 页,满分150 分,答题纸共2 页。
2.作答前,在答题纸指定位置填写姓名、报名号、座位号。
将核对后的条形码贴在答题纸指定位置。
3.所有作答务必填涂或书写在答题纸上与试卷题号对应的区域,不得错位。
在试卷上作答一律不得分。
4.用2B 铅笔作答选择题,用黑色字迹钢笔、水笔或圆珠笔作答非选择题。
4.测试范围:第一单元、第二单元、第三单元。
5.考试结束后,将本试卷和答题卡一并交回。
一、古诗文(35分)(一)默写与运用。
(13分)1.长风破浪会有时,___。
[李白《行路难(其一)》]2. ,病树前头万木春。
(刘禹锡《酬乐天扬州初逢席上见赠》)3.但愿人长久,。
(苏轼《水调歌头》)4.山河日月俱有感,风花雪月皆是情。
请写出古诗中写“雪"的连续两句诗:,。
【答案】直挂云帆济沧海沉舟侧畔千帆过千里共婵娟欲渡黄河冰塞川将登太行雪满山【解析】默写题作答时,一是要透彻理解诗文的内容;二是要认真审题,找出符合题意的诗文句子;三是答题内容要准确,做到不多字,不少字,不写错字。
本题中要注意“沧、畔、婵”等字要正确书写。
(二)阅读下面选文,完成第5—10 题(22分)【甲】嗟夫!予尝求古仁人之心,或异二者之为,何哉?不以物喜,不以己悲,居庙堂之高则忧其民,处江湖之远则忧其君。
是进亦忧,退亦忧。
然则何时而乐耶?其必曰“先天下之忧而忧,后天下之乐而乐"乎!噫!微斯人,吾谁与归?时六年九月十五日。
(节选自范仲淹《岳阳楼记》)【乙】仲淹内刚外和,性至孝,以母在时方贫,其后虽贵,非宾客不重肉。
妻子衣食,仅能自充。
而好施予,置义庄里中,以赡族人。
泛爱乐善,士多出其门下,虽里巷之人,皆能道其名字。
市场营销学期末考试试卷——B卷
考生注意:1、所有考题请回答在答题纸上,否则按无效试卷处理;2、请考生务必把年级、专业、班级、学号及姓名填写在答题纸上;3、本试卷共有4 页八大题,请考生检查是否有缺页或者损页;4 、考试结束后,请将试题及答题纸同时交回。
年级:专业:班级:学号:姓名:题号一二三四五六七八总分得分1 、企业最显著、最独特的首要核心职能是_________。
A.市场营销B.生产功能C.财务功能D.推销职能2、从企业价值链及其构成看,下游环节的中心是_________。
A.创造产品价值B.创造顾客价值C.技术创新D.产品创新3、一个战略经营单位是企业的一个_________.A.部门B.车间C.产品D.环节4 、_________主要指协助企业促销、销售和经销其产品给最终购买者的机构。
A.供应商B.创造商C.营销中间商D.广告商5、个人为了人身安全和财产安全而对防盗设备、保安用品、保险产生的需要是_________.A.生理需要B.社会需要C.恭敬需要D.安全需要6、人员推销活动的主体是_________。
A.推销市场B.推销品C.推销人员D.推销条件7 、非营利组织的采购人员只能按照规定的条件购买,_________。
A.有较大自由B.缺乏自主性C.受控制少D.可任意选购8、属于产业市场细分标准的是_________.A.职业B.生活格调C.收入D.顾客能力9、占有最大的市场份额,在价格变化、新产品开辟、分销渠道建设和促销战略等方面对本行业其它公司起着领导作用的竞争者,被称为_________.A.市场领导者B.市场利基者C.强竞争者D.近竞争者10、期望产品,是指购买者在购买产品时,期望得到与_________密切相关的一整套属性和条件。
A.包装B.质量C.产品D.用途11、统一定价就是我们通常说的_________定价。
A.分区定价B.运费免收定价C.基点定价D.邮资定价12、物流系统中总成本的数学公式为D = T + FW + VW + S,其中T 代表_________。
综合英语(四)试卷B
南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 1 页共6页出卷日期2014年6月1日南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 2 页共 6 页南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 3 页共 6 页南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 4 页共 6 页B. He felt angry at the students' rudeness.C. He wanted to make the students come on time later.D. He wanted to collect data for one of his studies.3. It can be inferred from the professor's study of lateness in the informal situation that________.A. American students will become impatient if their friend is five minutes late.B. neither Brazilian nor American students like being late in social gatheringsC. being late in one culture may not be considered so in another cultureD. Brazilian students will not come thirty-three minutes after the agreed time4. From the last paragraph we know that in Brazil ________.A. it is important to arrive at the appointed timeB. it is rude to keep the professor staying after classC. it is normal for students to leave during lecturesD. it is acceptable for professors to be late for class5. What is the main idea of this passage?A. It is important to be on time for class in the United States.B. The important of being on time differs among cultures.C. People learn the importance of time from the culture they are in.D. Students being late for class should explain the reason to their teacher.Passage TwoThe rise of multinational corporations, global marketing, new communications technologies, and shrinking cultural differences have led to an unparalleled increase in global public relations or PR. Surprisingly, since modern PR was largely an American invention, the U.S. leadership in public relations is being threatened by PR efforts in other countries.Ten years ago, for example, the world's top five public relations agencies were American-owned. In 1991, only one was. The British in particular are becoming more sophisticated and creative. A recent survey found that more than half of all British companies include PR as part of their corporate planning activities, compared to about one third of U.S. companies. It may not be long before London replaces New York as the capital of PR.Why is America lagging behind in the global PR race? First, Americans as a whole tend to be fairly provincial and take more of an interest in local affairs. Knowledge of world geography, for example, has never been strong in this country. Secondly, Americans lag behind their European and Asian counterparts in knowing a second language. Less than 5 percent of Burson Marshall's U.S. employees know two languages. Ogilvy and Mather has about the same percentage. Conversely, some European firms have half or more of their employees fluent in a second language. Finally, people involved in PR abroad tend to keep a closer eye on international affairs. In the financial PR area, for instance, most Americans read the Wall Street Journal. Overseas, their counterparts read the Journal as well as the Financial Times of London and The Economist, Publications not often read in this country. Perhaps the PR industry might take a lesson from Ted Turner of CNN(Cable News Network). Turner recently announced that the work "foreign" would no longer be used on CNN news broadcasts. According to Turner, global communications have made the nations of the world so interdependent that there is no longer any such thing as foreign.6. According to the passage, U.S. leadership in public relations is being threatened because of _______.A. an unparalleled increase in the number of public relations companiesB. shrinking cultural differences and new communications technologiesC. the decreasing number of multinational corporations in the U.S.D. increased efforts of other countries in public relations7. London could soon replace New York as the center of PR because_______.A. British companies are more ambitious than U.S. companiesB. British companies place more importance on PR than U.S. companiesC. British companies are heavily involved in planning activitiesD. four of the world's top public relations agencies are British-owned8. The word "provincial" (Line 2, Para. 3) most probably means "_______".A. limited in outlookB. like people from the provincesC. rigid in thinkingD. interested in world financial affairs9. We learn from the third paragraph that employees in the American PR industry_______.A. speak at least one foreign language fluentlyB. are ignorant about world geographyC. are not as sophisticated as their European counterpartsD. enjoy reading a great variety of English business publications10. What lesson might the PR industry take from Ted Turner of CNN?A. American PR companies should be more internationally-minded.B. The American PR industry should develop global communications technologies.C. People working in PR should be more fluent in foreign languages.D. People involved in PR should avoid using the word "foreign".Passage ThreeEarlier this year, the American College of Surgeons, the national scientific and educational organization of surgeons, conducted a nationwide survey that found that the average patient devotes an hour or less to researching his or her surgery or less to researching his surgery or surgeon.While prospective patients worry about the costs or complications of an operation, they don't necessarily look for information that would address their concern In fact, more than a third of patients who had an operation in the last five years never reviewed the credentials of the surgeon who operated. Patients are more likely to spend time researching a job change (on average, about 10 hours) or a new car (8 hours) than the operation they are about to submit to or the surgeon who wields the knife. And南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 5 页共 6 页many patients are satisfied with the answers they receive from their surgeon or primary care doctor, whoever those individuals happen to me.I felt curious about the survey, so I called Dr. Thomas Russell, executive director of the American College of Surgeons. "There is a tendency for patients not to get particularly involved and not to feel compelled to look into their surgery or surgeons," he told me.There are consequences to that kind of blind trust. "Today, medicine and surgery are really team sports, Dr. Russell continued, and the patient, as the ultimate decision maker, is the most important member of the team. Mistakes can happiness and parents have to be educated and must understand what is going on.In other words, a healthy doctor - patient relation dose not simply entail good bedside manners and responsible office management on the doctor. It also requires that patients come to the relationship educated about their doctors,their illness and their treatment."If we are truly going to reform the health care system in the U.S.," Dr.Russell said, "everybody has to participate actively and must educate themselves. That means doctors, nurses, other health care professional, lawyers, pharmaceutical companies, and insurance companies. But most of all, it means the patient."Trust is important. But as Sir Francis Bacon1, who was among the first to understand the importance of gathering data in science, once observed, knowledge is power.11. Patients do not seem to spend enough timeA researching job changes.B researching new cars.C researching their surgery or surgeons.D researching the American College of Surgeons.12. It appears that patients nowadays haveA little trust in their doctorsB too much trust in their doctorsC too much information about their doctors.D a healthy relationship with their doctors.13. The most important role in medicine and surgery should be playedA by pharmaceutical and insurance companies.B by doctors and nurses.C by lawyers.D by patients.14. It's a mistaken idea that a healthy doctor-patient relationshipA is a goal that can be achieved.B is what the patient desires.C is dependent just on the doctor.D also entails efforts made by the patient15. The author does NOT believe inA Francis Bacon.B blind trust.C scientific data.D the power of knowledge.Passage FourIn general, our society is becoming one of giant enterprises directed by a bureaucratic management in which man becomes a small well-oiled cog(齿轮)in the machinery. The oiling is done with higher wages, well-ventilated factories and piped music, and by psychologists and ―human relations‖ experts; yet all this oiling does not alter the fact that man has become powerless, that he is bored with it. In fact, the blue-and the white-collar workers have become economic puppets who dance to the tune of automated machines and bureaucratic management.The worker and employee are anxious not only because they might find themselves out of a job; they are anxious also because they are unable to acquire any real satisfaction of interest in life. They live and die without ever having confronted the fundamental realities of human existence as emotionally and intellectually independent and productive human beings.Those higher up on the social ladder are no less anxious. Their lives are no less empty than those of their subordinates. They are even more insecure in some respects. They are in a highly competitive race. To be promoted or to fall behind is not a matter of salary but even more a matter of self-respect. When they apply for their first job, they are tested for intelligence as well as for the right mixture of submissiveness and independence. From that moment on they are tested again and again—by the psychologists, for whom testing is a big business, and by their superiors, who judge their behavior, sociability, capacity to get along, etc. This constant need to prove that one is as good as or better than one’s fellow-competitor creates constant anxiety and stress, the very causes of unhappiness and illness.Am I suggesting that we should return to the pre-industrial mode of production or to nineteenth-century ―free enterprise‖ capitalism? Certainly not. Problems are never solved by returning to a stage which one has already outgrown. I suggest transforming our social system from a bureaucratically managed industrialism in which maximal production and consumption are ends in themselves into a humanist industrialism in which man and full development of his potentialities—those of all love and of reason—are the aims of social arrangements. Production and consumption should serve only as means to this end, and should be prevented from ruling man.16.By ―a well-oiled cog in the machinery‖ the author intends to render the idea that manisA. a necessary part of the society though each individual’s function is negligibleB. working in complete harmony with the rest of the societyC. an unimportant part in comparison with the rest of the society, though functioningsmoothlyD. a humble component of the society, especially when working smoothly南通大学2013-2014学年第二学期综合英语(四)(闭卷)试题册(B)第 6 页共 6 页。
马哲试卷B
一、单项选择题(从下列各题四个备选答案中选出一个正确答案,并将其代号写在答题纸的相应位置处。
答案错选或未选者,该题不得分。
每小题2分,共30分。
)1.唯物主义一元论同唯心主义一元论对立的根本点在于()A 世界发展动力问题 C 意识本质问题B 世界本原问题 D 实践本质问题2.马克思主义哲学新世界观创立的关键在于马克思确立了()A 剩余价值论B 阶级斗争理论C 无产阶级历史使命学说D 科学的实践观3.列宁对辩证唯物主义物质范畴的定义是通过()A 物质和意识的关系界定的B 一般与个别的关系界定的C 哲学与具体科学的关系界定的D 认识与实践的关系界定的4.设想没有运动的物质必然导致()A 客观唯心主义B 主观唯心主义C 二元论D 形而上学唯物主义5. 时间的一维性是指()A 无限性B 间隔性C 可逆性D 不可逆性6.互联网给我们带来了丰富多彩、快捷的全球信息,但互联网本身还不完善,网上充斥着大量的垃圾信息和一些病毒数据,给人们造成了极大的经济损失,甚至一些邪教组织、贩毒集团、黑社会势力也在利用这一新的传媒手段进行新的犯罪活动。
这表明()A 新事物的成长并不是一帆风顺的B 矛盾是普遍存在的,互联网也不例外C 矛盾双方的对立统一是消极和积极的对立统一D 矛盾双方的转化总是在无条件地进行着,否则就不会有物质运动的绝对性7.否定之否定规律揭示了事物发展的()A 方向和道路B 状态和形式C 现象和本质D 动力和源泉8.认识我国改革开放和社会主义现代化建设的实践,必须分清主流和支流,而且要看到取得的成就是主要的,只有这样才能不迷失方向,坚定前进信心。
这在哲学上是坚持了()A 普遍联系的观点 B 运动发展的观点C 肯定与否定的观点D “两点论”与“重点论”结合的观点9. 唯物主义认识论与唯心主义认识论的根本分歧在于()A 是否承认世界的本原是物质的B 是否承认矛盾是事物发展的动力C 是否承认认识是客体在人脑中的反映D 是否承认人有认识世界的能力10.制约人的行为和动机的根本条件是()A 传统意识B 阶级关系C 生产方式D 政治制度11.“追求真理比占有真理更宝贵”。
2020年山东省中国海洋大学生物化学考研真题B卷
2020年山东省中国海洋大学生物化学考研真题B卷一、判断题(每小题1分,对的打√,错的打×,共20分,请务必答在答题纸上)1.单糖的D/L和其旋光性之间没有必然联系2.胆汁酸是固醇的衍生物,是一种重要的乳化剂3.氨基酸与茚三酮反应产生蓝色化合物4.由于羰基碳和亚氨基氮之间的部分双键性质,所以肽键不能自由旋转。
5.结构域的组织层次介于三级结构和四级结构之间。
6.核糖核酸酶作为一种核酶能催化核酸的水解。
7.酶促反应速度取决于酶-底物复合物分解成产物和酶的速度。
8.在酶的活性中心,只有侧链基团带电荷的氨基酸残基直接参与酶的催化作用。
9.用双倒数作图法可以求出别构酶的Km值。
10.若双链DNA中的一条链碱基顺序为pCpTpGpApC,则另一条链的碱基顺序为pGpApCpTpG。
11.丙酮酸脱氢酶系中电子传递的方向为硫辛酸→FAD→NAD+.12.控制糖异生途径关键步骤的酶是丙酮酸羧化酶。
13.如果动物长期饥饿就要动用体内的脂肪,这时分解酮体的速度大于生成酮体的速度。
14.所有的RNA聚合酶都需要模板。
15.tRNA的3'-端所具有的CCA序列是通过后加工才加上的。
16.大肠杆菌染色体DNA由两条链组成,其中一条链充当模板链,另一条链充当编码链。
17.基因编码的产物不一定是蛋白质。
18.氨酰tRNA合成酶有高度特异性是因为能特异地识别特定氨基酸。
19.蛋白质生物合成中,氨基酸活化提供能量的物质是ATP。
20.与核糖体蛋自相比rRNA仅作为核糖体的结构骨架,在蛋白质合成中没有直接作用。
二、单项选择题(每小题1分,共20分,请务必答在答题纸上)1.葡萄糖链状形式的环化产物是:A、酐;B、半缩醛;C、糖苷;D、内酯;2.蛋白质的构象特征主要取决于A、氨基酸残基的组成、顺序和数目;B、氢键、盐键、范德华力和疏水作用;C、温度、离子强度和pH等环境条件;D、肽链间及肽链内的二硫键;3.下列有关α-螺旋的叙述哪个是正确的?A、分子内的氢键使α-螺旋稳定;B、减弱R基团间相互作用使α螺旋稳定;C、疏水作用使α螺旋中断;D、脯氨酸和甘氨酸残基有利于α螺旋形成;4.具有四级结构的蛋白质特征是:A、分子中必定含有辅基;B、含有两条或两条以上的肽链;C、每条多肽链都具有独立的生物学活性;D、依靠次级键维持结构的稳定性:5.下列关于血红蛋白运输氧的叙述那些是正确的?A、四个亚基独立地与氧结合,彼此之间并无联系;B、血红蛋白结合氧的百分数对氧分压作图,曲线呈S形;C、氧与血红蛋白的结合能力比一氧化碳强;D、氧与血红蛋白的结合引起血红素中铁离子价态的变化;6.酶的竞争性抑制剂可以使:A、Vmax减小、Km减小;B、Vmax不变、Km增加:C、Vmax增大、Km增加;D、Vmax不变、Km减小:7.对具有正协同效应的酶,其反应速度为最大反应速度0.9时底物浓度([S]og)与最大反应速度为0.1时的底物浓度([S]o.1)二者的比值[S]og/[S]o.1应该为:A、>81;B、=81;C、<81;D、无法确定;8.有关维生素作为辅酶与其生化作用中,哪一个是错误的?A、硫胺素--脱羧;B、泛酸--转酰基;C、叶酸--氧化还原;D、吡哆醛--转氨基;9.关于核苷酸的叙述,下列哪个为错误的?A、细胞中游离的核苷酸均为5'-核苷酸;B、核苷酸中的糖苷键均为C-N糖苷键;C、碱基与糖环平面垂直;D、核苷酸是含碱基的磷酸酯:10.双链DNA热变性后:A、黏度下降;B、沉淀系数下降;C、浮力密度下降;D、紫外吸收下降11.对DNA双螺旋结构的描述,下列哪个为错误的?A、两条链反向平行旋转;B、维持双螺旋结构主要作用力本质是范德华力;C、维持双螺旋结构稳定的主要力是疏水作用力;D、DNA双螺旋结构具有多态性12.乙酰CoA彻底氧化过程中的P/O值是:A、2.0;B、2.5;C、3.0;D、3.5:13.溶菌酶在催化反应时,下列因素中除哪个外,均与酶的高效率有关?A、底物形变;B、广义酸碱共同催化;C、临近效应与轨道定向;D、共价催化14.下列哪种氨基酸与尿素循环无关?A、赖氨酸;B、精氨酸;C、鸟氨酸;D、瓜氨酸;15.关于密码子的描述哪一项是错误的?A、每一个密码子由三个碱基组成;B、每一个密码子代表一种氨基酸或多肽链合成、终止的信息;C、每种氨基酸只有一个密码子;D、密码子无种属差异;16.原核生物RNA的生物合成,下列说法错误的是:A、RNA转录起始由DNA启动子控制,转录终止由终止子控制;B、除U和T外,DNA模板的有义链的碱基序列与合成的RNA碱基序列相同;C、RNA聚合酶由五种亚基组成,其中σ亚基具识别DNA分子中启动子的作用;D、RNA合成时,必须由DNA解链酶将DNA双链解开;17.联合脱氨基作用是指:A、氨基酸氧化酶与谷氨酸脱氢酶联合;B、氨基酸还原酶与谷氨酸脱氢酶联合;C、转氨酶与谷氨酸脱氢酶联合;D、腺苷酸脱氨酶与谷氨酸脱氢酶联合;18.dTMP的直接前体是:A、dCMP;B、dAMP;C、dUMP;D、dIMP;19.关于嘌呤核苷酸的生物合成哪种说法是错误的?A、四氢叶酸是甲酰基供体;B、IMP与天冬氨酸反应可生成CMP;C、IMP与谷氨酰胺反应可生成GMP;D、最先合成的嘌呤核苷酸是IMP;20.四种真核细胞mRNA后加工的顺序是:A、带帽、运输出细胞核、加尾、剪接;B、带帽、剪接、加尾、运输出细胞核;C、剪接、带帽、加尾、运输出细胞核;D、带帽、加尾、剪接、运输出细胞核;三、填空题(每空1分,共20分,请务必答在答题纸上)1.一般细胞内葡萄糖的构型是(1),组成蛋白质的氨基酸的构型是(2),多不饱和脂肪酸是(3)式,核糖与碱基的C-N键是(4)型。
《自动控制系统》试卷B附答案
专业班级学号姓名《自动控制系统》试卷B答题纸1. 2. 3.4. 5. . 6. 7二、单项选择题(每题1分,共10 分)1. 2. 3. 4. 5. 6. 7. 8. 9. 10.三、问答题(30分)1.分析比较开环控制和闭环控制的特征,优缺点和和应用场合的不同。
2.系统的稳定性定义是什么?误差和稳态误差的定义是什么?3.时间瞬态响应的性能指标有哪些?它们反映系统哪些方面的性能?四、计算题(50分)1. 系统结构图如下,请化简结构图,求传递函数。
(10分)2.已知线性系统的闭环特征方程为:4s+3s+32s+3s+2=0请用劳斯判据判断系统的稳定性。
(10分)3.已知单位负反馈系统的开环传递函数为:G(s)=Ks(0.5s2+4s+10)求使系统稳定的开环放大系数K的取值范围。
(10分)4.下图是电炉箱的控制系统图。
画出它的原理框图,并说明它的工作原理。
(10分)5.已知R(s)=1/s。
求Kn=1和0.1时系统的稳态误差。
(10分)《自动控制系统》试卷B一、 填空题(每空1 分,共10 分)1. 积分环节的传递函数为 ,惯性环节的传递函数为 。
2. 串联方框图的等效传递函数等于各串联传递函数之3. 单位斜坡信号的拉氏变换式 ,单位抛物线信号的拉氏变换是 。
4. 系统开环传递函数中有两个积分环节则该系统为 型系统。
5. 比例环节的频率特性为 。
6. 在零初始条件下输出量与输入量的拉氏变换之比,称该系统的传递函数。
7. 按信号传递的连续性分类,控制系统可分为两类: , 。
二、单项选择题(每题1分,共10 分)1. 传递函数反映了系统的动态性能,它与下列哪项因素有关?( )。
A.输入信号 B.初始条件 C.系统的结构参数 D.输入信号与初始条件2. 设系统的传递函数为15251)(2++=s s s G ,则系统的阻尼比为( )。
A.0.5 B. 1C.0.2D. 1.23. 典型二阶系统的阻尼比ξ=0时,其单位阶跃响应是( )。
2020-2021某大学《社会学》期末课程考试试卷B(含答案)
2020-2021《社会学》期末课程考试试卷B适用班级:闭卷一、单项选择题(在每小题的四个备选答案中选出一个正确答案写在答题纸上,每小题1分,共10分)1.首先提出“社会学”一词的是( )A.孔德B.斯宾塞C.韦伯D.马克思2.个人社会化过程就是( )向社会人转变的过程。
A.机械人B.生物人C.动物人D.非社会人3.由一对夫妇与父母和未婚子女聚居生活的家庭是()A.核心家庭B.主干家庭C.联合家庭D.断代家庭4.具有规模小,面对面交往,认同感强等特征的群体是( )A.内群体B.成员群体C.首属群体D.大群体5.以下不属于社会变迁的内容的是( )。
A.自然环境B.组织结构C.生活方式D.社会基本结构6.按照联合国的有关规定,一个国家60岁以上的人口超过总人口的10%,或者65岁以上的人口超过总人口的( ),该国的人口便属“老年型”人口。
A.5%B.6%C.7%D.8%7.社会学回答社会“为什么这样”的问题,这是社会学的()。
A.描述功能B.解释功能C.预测功能D.规范功能8.按照流动的参照物划分,社会流动可分为( )A.水平流动和垂直流动B.代内流动和代际流动C.结构性流动和自由流动D.向下流动和向上流动9.生活在某一种文化中的人,当他初次接触到另一种文化模式时产生的思想上的混乱与心理上的压力,社会学上把这种现象称为()。
A.文化边际B.文化堕距C.文化震惊D.文化失调10.社会学上把子女离家只有老两口的家庭称为()。
A.主干家庭B.空巢家庭C.核心家庭D.断代家庭二、名词解释(每小题5分,共20分)1.社会流动2.社会现代化3.社会控制4.首属群体三、简答题(本大题共5小题,每小题5分,共25分)1.简述科层制的含义。
2.二人关系中的互动与三人关系中的互动有什么异同?3.请举例说明什么是发展社会化和再社会化。
4.社会学与历史唯物主义之间的关系。
5.简述教育设置在社会发展中的显功能。
四、辨别分析题(判断下列各题的正误,并指出理由。