基础(8)
《地基基础规范(8章)(2013)

8.2
扩展基础
8.2.12 基础底板配筋除满足计算和最小配筋率要 求外,尚应符合本规范第8.2.1 条第3 款的构造要 求。计算最小配筋率时,对阶形或锥形基础截面, 可将其截面折算成矩形截面,截面的折算宽度和截 面的有效高度,按附录U 计算。基础底板钢筋可按 式﹙8.2.12﹚计算: As= M/0.9 fyh0 (8.2.12)
8.2
8.2.13
扩展基础
当柱下独立柱基底面长短边
之比ω 在大于或等于2、小于或
等于3 的范围时,基础底板短向 钢筋应按下述方法布臵:将短向全 部钢筋面积乘以λ 后求得的钢筋 ,均匀分布在与柱中心线重合的宽
1-冲切破坏锥体最不利一侧的斜截面;2-冲切 破坏锥体的底面线
8.2
扩展基础
at——冲切破坏锥体最不利一侧斜截面的上边长(m),当计算 柱与基础交接处的受冲切承载力时,取柱宽;当计算基础变阶 处的受冲切承载力时,取上阶宽; ab——冲切破坏锥体最不利一侧斜截面在基础底面积范围内的 下边长(m),当冲切破坏锥体的底面落在基础底面以内(图 8.2.8a、b),计算柱与基础交接处的受冲切承载力时,取柱宽 加两倍基础有效高度;当计算基础变阶处的受冲切承载力时, 取上阶宽加两倍该处的基础有效高度; pj——扣除基础自重及其上土重后相应于作用的基本组合时的 地基土单位面积净反力(kPa),对偏心受压基础可取基础边缘 处最大地基土单位面积净反力; Al——冲切验算时取用的部分基底面积(m2)(图8.2.8a、b 中 的阴影面积ABCDEF); Fl——相应于作用的基本组合时作用在Al 上的地基土净反力设 计值(kPa)。
1:1.50 1:1.25
1:1.25
1:1.50 1:1.50
1:1.50
2021高考英语阅读明白得基础全程训练(8)(1)

2021高考英语阅读明白得基础全程训练(8)及答案阅读明白得-----B(2020·安徽卷,B)Think about the different ways that people use the wind. You can use it to fly a kite or to sail a boat. Wind is one of our cleanest and richest power sources (来源), as well as one of the oldest. Evidence shows that windmills (风车) began to be used in ancient Iran back in the seventh century BC. They were fi rst introduced to Europe during the 1100s, when armies returned from the Middle East with knowledge of using wind power.For many centuries, people used windmills to grind (磨碎) wheat into flour or pump water from deep underground when electricity was discovered in the late 1800s, people living in remote areas began to use them to produce electricity. This allowed them to have electric lights and radio. However, by the 1940s when electricity was available to people in almost all areas of the United States, windmills were rarely used.During the 1970s, people started becoming concerned about the pollution that is created when coal and gas are burned to produce electricity. People also realized that the supply of coal and gas would not last forever. Then, wind was rediscovered, though it means higher costs. Today, there is a global movement to supply more and more of our electricity through the use of wind.风能早在公元前七世纪就开始被人们用风车所利用,当人们发明了电以后,风能被用来发电,但随着电的普遍利用,风车慢慢不被人们利用了。
高考英语完形填空基础精品题练习(8)及答案[ 高考]
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2014高考英语完形填空基础精品题练习(8)及答案完形填空Life in the twenty-first century will be very 1 . Many changes will take place, but 2 will the changes be.The population is growing 3 . There will be many 4 in the world and most of them will live 5 than people in the twentieth century.Computers will be much smaller and 6 and there will be at least one in every 7 . And 8 studies will be one of the important subjects in school then.People wil l work 9 and they will have more free time for sports, watching TV and travelling. 10 will be much easier and cheaper. And many more people will go to 11 countries for holidays.There will be changes in our 12 , too. Maybe no one will eat meat every day, instead, they eat more fruit and vegetables. Maybe people will be 13 . Work in the future will be different, too. 14 and hard work can be done by robots. Because of this, 15 will not have enough work to do .This will be a problem.1. A. interesting B. hard C. different D. beautiful2. A. why B. how C. when D. what3. A. slowly B. fast C. quietly D. suddenly4. A. people B. workers C. scientists D. doctors5. A. long B. longer C. happy D. lucky6. A. more useful B. useful C. helpful D. less useful7. A. hospital B. factory C. home D. town8. A. science B. maths C. English D. computer9. A. fewer hours B. more hoursC. eight hoursD. more than eight hours10. A. Seeing doctors B. Going to the cinemaC. ShoppingD. Travelling11. A. rich B. other C. poor D. small12. A. food B. clothes C. fruit D. drinks13. A. fatter B. thinner C .healthier D. more pleased14. A. Safe B. Easy C. Simple D. Dangerous15. A. a few people B. all the peopleC. many peopleD. some people名师点评本文介绍了二十一世纪我们社会将发生的各种各样的变化,包括就业,饮食等一系列的变化。
人工智能基础(习题卷8)

人工智能基础(习题卷8)第1部分:单项选择题,共53题,每题只有一个正确答案,多选或少选均不得分。
1.[单选题]关于神经网络的说法中,正确的是()A)增加网络层数,总能减小训练集错误率B)减小网络层数,总能减小测试集错误率C)增加网络层数,可能增加测试集错误率答案:C解析:2.[单选题]以下算法中,不属于分类预测的典型算法的是( )A)Logistic回归B)决策树C)K-means算法D)神经网络答案:C解析:3.[单选题]下列算法中:①KNN;②线性回归;③对数几率回归,可以用神经网络去构造的().A)①②B)②③C)①②③D)以上答案都不正确答案:B解析:KNN算法不需要训练参数,而所有神经网络都需要训练参数,因此神经网络帮 不上忙。
最简单的神经网络--感知器,其实就是线性回归的训练。
我们可以用一层的神经 网络构造对数几率回归。
4.[单选题]通过对大量的平行语料进行统计分析,构建统计翻译模型,进而使用此模型进行翻译。
该翻译方式是( )A)知识库式翻译系统B)统计式翻译系统C)范例式翻译系统D)直译式翻译系统答案:B解析:5.[单选题]在回归分析中,说法正确的是( )。
A)解释变量和被解释变量都是随机变量B)解释变量为非随机变量,被解释变量为随机变量C)解释变量和被解释变量都为非随机变量D)解释变量为随机变量,被解释变量为非随机变量答案:B解析:在回归分析中,解释变量可以理解为自变量,具有确定性,因此为非随机变量; 被解释变量可以理解为因变量,具有随机性,因此为随机变量。
6.[单选题]DSSM经典模型的缺点:1.Wordhashing可能造成词语冲突;2.采用词袋模型,损失了上下文语序信息;3.搜索引擎的排序由多种因素决定,用户点击时doc排名越靠前越容易被点击,仅用点击来判断正负样本,产生的噪声较大,模型难以收敛;4.效果不可控。
C)2.3.4D)1.2.3.4答案:D解析:DSSM经典模型的缺点:1.Wordhashing可能造成词语冲突;2.采用词袋模型,损失了上下文语序信息;3.搜索引擎的排序由多种因素决定,用户点击时doc排名越靠前越容易被点击,仅用点击来判断正负样本,产生的噪声较大,模型难以收敛;4.效果不可控。
中医基础理论试题及答案(8)

中医基础理论试题及答案201.阴阳不能相互维系,可出现A.阳胜生热,阴胜生寒B.阳虚生寒,阴虚生热C.阴盛格阳,阳盛格阴D.阴损及阳,阳损及阴E.阴虚阳亢,阳虚阴盛答案:201.C202.以下除哪一项之外,均属气机失调A.气滞B.气逆C.气陷D.气闭E.气虚答案:202.E203.以下哪一项不属于“内生五邪”A.风气内动B.寒邪直中C.湿浊内生D.津伤化燥E.火热内生答案:203.B204.《临证指南》认为:“内风”产生之机制为A.人体气机之逆乱B.身中阳气之变动C.体内阴血之不足D.全身筋脉之失养E.周身络脉之失濡答案:204.B205.“寒从中生”的主要病机是由于A.寒邪从肌表而入,内传脏腑B.寒邪直中脾胃,损伤阳气C.恣食生冷,寒从中生D.阳气虚衰,温煦气化功能减退E.痰湿内阻,从阴化寒答案:205.D206.津伤化燥,产生“内燥”病变,以哪些脏腑多见A.肺、胃、三焦B.肺、肾、三焦C.肝、胃、大肠D.肺、胃、大肠E.肺、肾、小肠答案:206.D207.脾的阳气失调病机,下列哪项是不确切的A.健运无权,气血生化不足B.受纳失调,消谷善饥C.升举无力,中气下陷D.统血无权,血溢脉外E.运化失职,水湿内生答案:207.B208.最易导致阴虚阳亢的脏是A.肺、脾、肾B.心、脾、肾C.心、肝、肾D.脾、肝、肾E.肺、脾、肝答案:208.C209.以下除哪脏外,均与女子胞失常的病机密切相关A.心B.肺C.脾D.肝E.肾答案:209.B210.“见肝之病,当先实脾”属于A.未病先防B.既病防变C.治病求本D.因人制宜E.扶正祛邪答案:210.B211.以下可以解释“薄厥”病机的是A.气滞B.气逆C.气闭D.气脱E.气陷答案:211.B212.气陷常见于A.脾气虚B.肺肾气虚C.脾肾气虚D.心肾气虚E.肾气虚答案:212.A213.《金匮要略心典》说“吐下之余,定无完气”的病机是A.气不固津B.气随津脱C.脾胃气虚D.中气不陷E.气不生津答案:213.B214.下列中除哪项外,均属基本治则的内容A.治病求本B.扶正祛邪C.调整阴阳D.疏肝理气E.三因制宜答案:214.D215.以下标本划分,哪一项不确切A.正气为本,邪气为标B.病因为本,症状为标C.治疗为本,病情为标D.旧病为本,新病为标E.原发病为本,继发病为标答案:215.C216.气虚之人外感,治以益气解表,此属于A.扶正B.祛邪C.标本同治D.急则治标E.缓则治本答案:216.C217.“寒因寒用、热因热用”属于A.逆治法B.阳病治阴,阴病治阳C.阳中求阴,阴中求阳D.扶阳配阴,扶阴配阳E.从治法答案:217.E218.“用寒远寒”属于A.因人制宜B.因地制宜C.因时制宜D.标本同治E.泻其有余答案:218.C219.以下属于温病“逆传”的传变现象是A.卫分传气分B.上焦传中焦C.气分传营分D.营分传血分E.肺病传心包答案:219.E220.概括虚损病证表现虚候,用补益方药治疗的是A.逆者正治B.从者反治C.实者泻之D.虚者补之E.虚虚实实答案:220.D221.病人正虚邪实而正气不耐攻伐,此时应采取的治则是A.扶正B.祛邪C.祛邪扶正兼用D.先祛邪后扶正E.先扶正后祛邪答案:221.E222.“壮水之主,以制阳光”是指A.以阳中求阴之法调整阴阳偏衰B.以阴中求阳之法调整阴阳偏衰C.泻热之法,调整阳的偏盛D.以补阴之法,治疗阴虚阳亢之证E.以补阳之法,治疗阴虚亢之证答案:222.D223.“塞因塞用”的治法,适用于治疗A.表实时虚证B.虚实夹杂证C.真虚假实证D.真实假虚证E.表虚里实证答案:223.CA2型题(从每题的A、B、C、D、E五个备选答案中选择一个最佳答案)1.阴阳属性之征兆是A.上下B.动静C.晦明D.寒热E.水火答案:1.E2.“阴阳离决,精气乃绝”是指A.阴阳对立制约关系的失常B.阴阳依存互根关系的破坏C.阴阳对立消长关系的紊乱D.阴阳消长平衡关系的失调E.阴阳相互转化关系的失常答案:2.B3.在下列阴阳失调病机中,阴的含义为“阴邪”的是A.阴虚则阳亢B.阳盛则阴病C.阴盛则阳病D.阴损及阳E.阳盛格阴答案:3.C4.“阳胜则阴病”是指A.阴虚内热B.阳虚内寒C.阴盛伤阳D.阳盛伤阴E.阴阳两虚答案:4.D5.病人先见高热气粗、面红目赤,后突然面白肢冷、脉微欲绝,属于A.重阳必阴B.重阴必阳C.阴阳两虚D.阳消阴长E.阳损及阴答案:5.A6.病人先有阴虚内热的症状,后出现畏寒肢冷,大便溏泄等,证属A.阴损及阳B.阳损及阴C.阴盛阳病D.阳盛格阴E.阴阳亡失答案:6.A7.下列哪一项属阳盛伤阴的症状A.壮热B.烦躁C.脉数D.苔黄E.便干答案:7.E8.下列治法中,以阴阳制约为理论依据的是A.寒者热之,热者寒之B.阳中求阴,阴中求阳C.热因热用,寒因寒用D.阴病治阳,阳病治阴E.益火之源,以消阴翳答案:8.A9.“治寒以热”用于A.阴虚证B.阳虚证C.阴盛证D.阳盛证E.阴阳两虚证答案:9.C10.按五行的生克乘侮规律,下列哪种提法不确切A.水生木,木为水之子B.火克金,火能侮金C.金克木,金能乘木D.金克木,木之所不胜是金E.土生金,土为金之母答案:10.B11.“肝火犯肺”属于A.子病犯母B.母病及子C.相克D.相乘E.相侮答案:11.E12.属于“子病犯母”的是A.脾病及肺B.脾病及肾C.肝病及肾D.肝病及心E.肺病及心答案:12.C13.下列哪项是根据相克规律确定的治法A.泻南补北法B.扶土抑木法C.滋水涵木法D.培土制水法E.佐金平木法答案:13.C14.“泻南补北”法适用于A.肾阴虚而相火妄动B.心阴虚而心阳亢盛C.肾阴虚而心火上炎D.肾阴虚而肝阳上亢E.肝阴虚而心火上炎答案:14.C15.肾阳虚导致脾阳虚,治疗宜A.益火补土法B.金水相生法C.抑木扶土法D.培土生金法E.泻南补北法答案:15.A16.肾水泛溢导致脾土虚弱的病变属于A.子病及母B.母病及子C.制己所胜D.侮己所不胜E.己所不胜乘之答案:16.D17.下列属于“实则泻其子”的是A.肝实泻肾B.肺实泻脾C.肝实泻肺D.心实泻肺E.肝实泻心答案:17.E18.心为“五脏六腑之大主”,是由于A.总统身之魂魄B.心为君主之官C.心者,生之本D.心主身之血脉E.心主神明19.肺为水之上源,是指肺在水液代谢中具有A.宣发布散津液B.肺气肃降有利于大肠吸收津液C.助心转输气血津液D.通调水道,肃降水液E.宣发卫气,调节汗液之排泄答案:19.D20.津液化为汗液排出体外,主要靠何脏的何种功能A.心主血脉B.肺主宣发C.肾主气化D.肝主疏泄E.脾主统摄答案:20.B21.口唇的红润丰满与否,主要取决于A.脾气B.心血C.肺气D.肾精E.肝血答案:21.A22.四肢肌肉强健有力主要取决于A.心主血脉C.肾主骨D.脾主运化E.肺主气答案:22.D23.脾主升清的确切内涵是A.脾之阳气主升B.脾气以升为健C.脾气散精上归于肺D.升已而降,若雾露之溉E.运化水液,转输周身答案:23.C24.与情志活动关系密切的是A.心主神志B.肝主疏泄C.脾主运化D.肺主治节E.肾主藏精答案:24.B25.在肾主闭藏的功能中,最重要的是A.纳气归肾,促进元气之生成B.固摄水液,防止水液无故流失C.固摄精气,防止精气无故散失D.固摄二便,防止二便之失禁E.摄纳阳气,防止阳气浮越于上答案:25.C26.主司二便的脏是A.心B.肝C.脾D.肺E.肾答案:26.E27.在水液代谢中起主宰作用的是A.心B.肺C.脾D.肝E.肾答案:27.E28.“利小便即所以实大便”的理论依据是A.肾司二便,小便大便相关B.中气不足,二便异常C.淡渗利水,则脾阳得健而大便实D.二便的正常排泄均与小肠的泌别清浊有关E.利小便药物本身具有止泻作用答案:28.D29.两脏同病常表现为气血两亏的是B.心肝两虚C.心脾两虚D.脾肾两虚E.肺肾两虚答案:29.C30.对生殖功能具有调节作用的两脏是A.肝与脾B.肝与肾C.脾与肾D.心与肾E.心与肝答案:30.B31.正常的呼吸运动与哪两脏有关A.心与脾B.心与肺C.肺与脾D.肺与肾E.肺与肝答案:31.D32.自汗、多尿、出血、滑精等是气的哪种功能失常A.推动作用B.温煦作用C.防御作用E.气化作用答案:32.D33.下列不属于气的固摄作用的是A.控制血液B.防止出汗过多C.控制尿液D.固摄精带E.固摄内脏的位置答案:33.E34.具有防止血液逸出脉外,是气的A.推动作用B.温煦作用C.防御作用D.固摄作用E.气化作用答案:34.D35.联结心搏动和肺呼吸的中心环节是A.经气B.气血C.宗气D.营气E.卫气答案:35.C36.血液的正常循环,除下列哪项之外,均与之有关A.心气的推动B.肺朝百脉C.脾气统摄D.肝的疏泄E.肾的藏精答案:36.E37.大出血导致气随血脱的生理基础是A.气能生血B.气能摄血C.气能行血D.血为气母E.血能载气答案:37.E38.“吐下之余,定无完气”的生理基础是A.气能生津B.津能化气C.气能摄津D.气能行津E.津能载气答案:38.E39.“夺血者无汗,夺汗者无血”说明下列哪两者的关系A.气与血B.气与津液D.津液与汗E.血与精答案:39.C40.头痛部位在头侧者与哪条经有关A.厥阴经B.阳明经C.太阳经D.少阳经E.阳维脉答案:40.D41.巅顶痛属于A.太阳经头痛B.阳明经头痛C.少阳经头痛D.少阴经头痛E.蕨阴经头痛答案:41.E42.“身以前皆热”是哪一经气盛的表现A.手少阴心经B.足阳明胃经C.足太阴脾经D.任脉E.冲脉43.痹证常因风寒湿三气合邪所致,说明了六淫致病特点中的A.季节性B.地区性C.相兼性D.转化性E.外感性答案:43.C44.风邪易袭阳位,一般不会出现下列哪一症状A.鼻塞B.头痛C.咽痒D.咳嗽E.下肢浮肿答案:44.E45.寒痹又称痛痹,主要反映了哪一致病特点A.寒为阴邪B.寒邪易伤阳气C.寒主收引D.寒性凝滞E.湿性重浊答案:45.D46.寒邪致病,症见肢体屈伸不利,是属于A.寒客肌表,卫阳被遏B.寒邪凝滞,痹阻经脉C.寒性收引,筋脉挛急D.寒邪入里,直中三阴E.以上都不是答案:46.D47.暑邪伤人,可见口渴喜饮、气短乏力,是由于A.暑为阳邪,其性炎热B.暑邪可致食欲不振、饮食减少C.暑性升散,耗气伤津D.暑邪夹湿,温邪困脾,脾气不运E.以上都不是答案:47.C48.外邪致病,导致病程缠绵难愈,常见的病邪是A.风邪B.火邪C.寒邪D.湿邪E.燥邪答案:48.D49.湿邪导致头痛的主要特点是A.头痛如裹B.头痛晕沉C.头脑空痛D.头痛连项答案:49.A50.其性重浊,易袭阴位的病邪是A.暑邪B.寒邪C.火邪D.湿邪E.风邪答案:50.D51.肢体冷痛,关节屈伸不利,时而或冷厥不仁,其主要病机为A.寒性凝滞B.风性主动C.寒性收引D.风性数变E.湿性趋下答案:51.C52.六淫中,易致肿疡的病邪是A.风邪B.湿邪C.寒邪D.燥邪E.火热之邪答案:52.E53.下列哪一项不是火热之邪的病证特点B.面红目赤C.吐血衄D.斑疹或脓血E.面色黄晦答案:53.E54.大怒的情志刺激主要影响人体的哪种功能A.呼吸功能B.疏泄功能C.藏血功能D.气化功能E.运化功能答案:54.C55.就脏腑而论,偏嗜饮酒多先伤及下列哪组脏腑A.脾、胃B.心、小肠C.肺、大肠D.肝、胆E.肾、膀胱答案:55.A。
基础英语语法8被动语态强调句

2. They term.
bought
ten computers last
Ten computers were bought (by them) last term. 一般过去时:S+was/were +过去分词
Tom will clean the room tomorrow. 主
谓
宾(受动者)
Uncle Wang will mend the TV set tomorrow.
The TV set will be mended by Uncle Wang tomorrow.
3.They will finish the work in ten days.
The work will be finished (by them)
12.We can use the box as a table.
13.We should clean the classroom everyday
被动语态中的特殊情况 1.不及物动词带介词和介词宾语时,在变为被动语态时,仍然要 带上介词。 e.g. The students listen to the teacher carefully in class. 被动句:The teacher is listened to carefully by the students in class. e.g. They look after the new students in the school. 被动句:The new students are looked after by them in the school.
基础护理技术-(8)含答案

基础护理技术-(8)A2型题1. 患者,女性,52岁,因脑梗死入院,护士收集到以下资料,属于患者客观资料的内容是A.咽喉部充血B.头晕、头痛C.不想吃饭D.感到恶心E.全身无力答案:A2. 患者,男性,56岁,因颅脑损伤急诊入院,护士评估患者后,确认患者存在以下健康问题,护士应首先解决的是A.皮肤完整性受损B.有窒息的危险C.语言沟通障碍D.营养缺乏E.便秘答案:B3. 患者,男性,32岁,出租车司机。
因肺炎球菌肺炎入院,患者咳嗽,呼吸困难,自觉头胀痛,恶心,不思饮食,全身无力。
体温39.2℃,脉搏140次/分,呼吸浅快,皮肤口唇发绀,要求医生尽快治好疾病回去工作。
排列在首位的护理诊断应该是A.舒适的改变B.气体交换受损C.活动无耐力D.体温过高E.焦虑答案:B4. 患者,女性,16岁,因急性上呼吸道感染入院,患者意识清醒,语言表达准确,此时收集资料的直接来源是指A.患者亲属B.患者自己C.门诊病历D.文献资料E.医生答案:B5. 患儿1岁,因支原体肺炎入院,平时由保姆照顾,此时收集资料的主要来源是指A.患儿母亲B.患儿自己C.患儿的病历D.文献资料E.患儿保姆答案:E6. 刘某,67岁,有阵发性心前区疼痛史4年。
2h前,患者因着急而发生持续性心前区压榨性疼痛,面色苍白,出冷汗,烦躁不安,有濒死感,急诊入院,诊断为急性广泛前壁心肌梗死,医嘱绝对卧床休息。
护士评估后做出如下护理诊断,排在首位的是A.潜在并发症:心源性休克B.胸痛:与心肌缺血、坏死有关C.恐惧:对心肌梗死可能致死感到恐惧D.知识缺乏:缺乏有关冠心病预防的知识E.进食、如厕、卫生自理缺陷:与心肌梗死后24h之内绝对卧床休息有关答案:B7. 护士小李在候诊室巡视时,发现一年轻男患者精神不振,询问后患者诉肝区隐痛,疲乏,食欲差,双眼巩膜黄染。
检查:尿三胆(++)。
护士应A.转急诊室诊治B.安排提前就诊C.将患者转隔离门诊D.给患者测量生命体征E.安慰患者,不要着急焦虑答案:C8. 患者,男性,47岁,因车祸致左上肢外伤,伤口大量出血,被送入急诊室,在医生未到之前,值班护士首先应A.通知病房,准备暂空床B.详细询问发生车祸的原因C.向保卫部门报告车祸的情况D.注射镇痛剂,减轻伤口疼痛E.止血,测血压,配血、建立静脉通道答案:E9. 患者,男性,60岁,入院诊断为慢性支气管炎、高血压。
《大学化学基础》课程试卷(8)

《大学化学基础》试卷(8)学院 专业 班级学号 姓名题 号 一 二 三 四 五 总分 阅卷教师得 分………………………………………………………………………………………………………………一、选择题(每题只有一个正确的答案,将你选择的答案填入下表中)(每小题1分,共20分) 题号 1 2 3 4 5 6 7 8 9 10 答案 题号 11 12 13 14 15 16 17 18 19 20 答案1. SiH 4分子的空间构型是:A. 平面三角形B. 三角锥形C. 正四面体形D. 直线形 2. 相同摩尔浓度的HCl 和HAc 溶液,则HCl 溶液与HAc 溶液的pH 值大小对比:A. HAc 的pH 值大B. HCl 的pH 值大C. 二者pH 值相等D. 不确定 3. 某电子在原子核外的运动状态是主量子数4,副(角)量子数2,则其原子轨道是:A. 3pB. 4dC. 4pD. 4s 4. 下列说法正确的是: A. 放热反应均为自发反应 B. △r S m 为正的反应均为自发反应 C. △r S m 为正、△r H m 为负的反应均为自发反应 得 分5. 下列各物质中不存在氢键的分子是:A. NH3B. CH4C. 邻硝基苯酚D. HNO36.已知:(1)CoO(s)+CO(g)= Co(s)+CO2(g),K(2)CO2(g)+H2(g) = CO(g)+H2O(l),K(3)H2O(l) = H2O(g),K则反应CoO(s)+H2(g)=Co(s)+H2O(g)的平衡常数为:A. K K/KB. K K KC. K K/KD. K/K K7. BaCO3能溶于盐酸的最合理解释是:A. BaCO3的K spθ较大;B. BaCO3在水中的溶解度较大;C. 能反应生成CO2气体离开系统,使溶解平衡发生移动;D. BaCO3的K spθ较小;8. 根据分子轨道理论下列物质中不可能存在的是:A. Li2B. B2C. C2D. He29. 下列各项条件改变中,能引起化学反应的标准平衡常数数值改变的是:A. 压力改变;B. 催化剂更换;C. 温度改变;D. 容器的体积改变;10.下列氧化剂中,当其溶液的H+浓度增大时,氧化性增强的是:A. KClO3B. Br2C. FeCl3D. F211. 按配合物的价键理论,配合物中中心原子与配体之间的结合力为A. 离子键B. 配位键C. 氢键D. 正常共价键12. 下列物理量值的大小与化学反应方程式的写法无关的是:A. △r H mB. △r S mC. E(电池电动势)D. △r G m13.下列电对中,Eθ值最小的是:A. H+/H2B. H2O/H2C. HOAc/H2D. HF/H214、欲使AgCl溶解,可加入:A. NH3·H2OB. HClC. NaOHD. NaCl15.具有下列各组量子数的电子能量最高的是:A. 4,2,0,-1/2B. 4,3,1,+ 1/2C. 3,2,1,-1/2D. 3,2,0,+1/2A. K a/2B.KaC 21 C.2/KaC D. C/217. 下列描述中正确的是:A. 因为电对Ni 2++2eNi 的ϕӨ为–0.23 V ,所以2Ni 2++4e2Ni 的ϕӨ为–0.46 VB. 在氧化还原反应中,若两个电对的E θ值相差越大,则反应进行得越快C. 含氧酸根的氧化能力通常随溶液的pH 值减小而增强D. 由于E θ(Fe 2+/Fe)=-0.440V , E θ(Fe 3+/Fe 2+)=0.771V , 故Fe 3+与Fe 2+能发生氧化还原反应18.往1dm 3浓度为0.10 mol·dm -3HAc 溶液中加入一些NaAc 晶体并使之溶解,会发生的情况是:A. HAc 的K a 值增大B. HAc 的K a 值减小C. 溶液的pH 值增大D. 溶液的pH 值减小 19.关于铜、锌和稀硫酸构成的原电池,叙述错误的是:A. 锌是负极B. 铜是正极C. 电子由锌片经导线流入铜片D. 电子由锌片经硫酸溶液流入铜片 20. 某容器中加入相同物质的量的HCl 和O 2,在一定温度下发生反应: 4HCl(g)+O 2(g)2Cl 2(g)+2H 2O(g),平衡时,下列关系正确的是:A. p (HCl)>p (O 2)B. p (HCl)<p (O 2)C. p (HCl)=p (O 2)D. p (HCl)=p (Cl 2)二、是非判断题(判断下列叙述是否正确,正确的画√,错误的画×,请将答案填入下表中) (每小题1分,共10分) 题号 1 2 3 4 5 6 7 8 9 10 答案1. 凡含有极性键的分子都是极性分子。
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基础练习(8)I. Choice1.I’m sure he will help her if he _______ her.A. knowsB. will knowC. is to knowD. can know2.I'm sure he'll come to see me before he ____ Beijing.A. is about to leaveB. has leftC. will leaveD. leaves3.There was complete silence when he _____ the radio.A. has turned offB. turned offC. had turned offD. would turn off4. It won't be long before such a thing _____again.A. will happenB. happensC. is happenedD. has happened5.They should have finished the job before noon, but they _____A. don'tB. didn'tC. hadn'tD. shouldn't6.You can go and take a rest; I'11 see to it that the job ____finished in time.A. willB. wouldC. will beD. would be7. Look! There ____ the car!A. comesB. has comeC. is comingD. came8. "Betty got married last week." "I_____ that she would get married so young."A. never dreamB. never dreamedC. shall never dreamD. will dream9. There _____ an English film next Saturday.A. will haveB. is to haveC. is going to haveD. is going to be10. It is the first time that he _____late for school.A. isB. wasC. will beD. has been11. Once you ____ a promise, you must carry it out.A. will makeB. madeC. have madeD. had made12. My sister _____the Youth League since 1983.A. joinedB. has joinedC. is inD. has been in13. He _____ Shanghai and will stay there for a year.A. has been toB. goes toC. has left forD. has left14. The scientist _____the experiment for half a year, but he ____ yet.A. made; didn't succeedB. made; hasn't succeededC. was making; didn't succeedD. has been making; hasn't succeeded15. I've heard he has been having a fever since last Sunday. I ____ better now.A. hope he is gettingB. hoped he gotC. hope he getsD. hope he was getting16. When I got to the top of the mountain, the sun ____.A. shoneB. has shoneC. had shoneD. was shining17. By the time he____ fourteen years old, he ____advanced mathematics by himself.A. has been; learnedB. had been; had learnedC. was; learnedD. was; had learned18.When the firemen arrived, the fire _____ put out.A. hasB. hadC. wasD. had been19. ---"Did you see Xiao Li at the party?" --- "No, _____ by the time I arrived."A. she'd leftB. she's leftC. she leftD. she was leaving20.The boy whom you lent the bike to _____ by a car.A. is hitB. be hitC. had been hitD. was hit21.Please concentrate __________ I am showing to you.A. at whatB. at whichC. on whichD. on what22.I don’t think the shoes need ____________ in the shop.A. mendingB. being mendedC. to mendD. to have been mended23.He has been standing at the door for the whole morning, __________ the postman to come.A. callingB. likingC. hopingD. expecting24.I was too sleepy to be conscious _________ how cold it was.A. ofB. onC. toD. at25.As soon as the children were ________, their mother got them out of bed and into thebathroom.A. wokeB. awakeC. awokeD. waken26.I didn’t kno w what to do but then an idea suddenly ________ to me.A. passedB. happenedC. hitD. occurred27.“Is Jack coming tonight?”“ He said he was coming but he hasn’t __________ yet.”A. seemedB. appearedC. happenedD. got28.He agreed ________ me _________ an early start. So he agreed _________ my suggestion.A. with … to … onB. to … with … onC. with … on … toD. on … to … with29.Though this coat _________ you well, its color do esn’t ________ you, I think.A. suits … fitB. fits … suitC. fits … fitD. suits … suit30.Children need at least nine hours’ sleep every day, _________ they won’t work ________think properly during the day.A. b ut … orB. and … andC. or … orD. or … andMost Americans don’t like to get advice from members of their family. When they need advice, they don’t__1__ ask people they know. Instead, many Americans write letters to newspapers and magazines which give advice on many different subjects, including family problems, sex, the use of language, health, cooking, child __2__, clothes, and how to buy a house or a car.Most newspapers regularly__3__ letters from readers with problems . Along with the letters there are answers written by people who are supposed to know how to __4__ such problems. Some of these writers are doctors; others are lawyers or educators. But two of the most __5__ writers of advice are women without special __6__for these kinds of work.. One of them answers letters addressed to “Dear Abby”. The other is addressed as “Dear Ann Landers”.Experience is their__7__ for giving advice. There is one writer who hasn’t lived long enough to __8__ much experience. She is a girl named Angel Cavaliere, who started writing advice for newspaper readers at the age of ten. Her advice to __9__ readers now appears regularly in the Philadelphia Bulletin in a column called DEAR ANGEl.III. Reading ComprehensionMan still has a lot to learn about the most powerful and complex part of his body ---- the brain. In ancient times men did not think that the brain was the centre of mental activities. Aristotle, the philosopher of ancient Greece, thought that the mind was based in the heart. It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind.In the past 50 years there has been a great increase in the amount of research being done on the brain. Chemists and biologists have found that the way the brain works is far more complicated than they had thought. In fact many believe that we are only now really starting to learn the truth about how the human brain works. The more scientists find out, the more questions they are unable to answer. For instance, chemists have found that over 100,000 reactions take place in the brain every second! Mathematicians who have tried to use computer to copy the way the brain works have found that even using the latest electronic equipment they would have to build a computer which weighed 10,000 kilos. Some recent research also suggests that we remember everything that happens to us. We may not be able to recall this information, but it is all stored in our brains.Scientists hope that if we can discover how the brain works, we will be able to put it to better use. Man differs most from all the other animals in his ability to learn and use language but we still not know exactly how this is done. Scientists are trying to find out whether there is something about the way we teach language to children which in fact prevents children from learning sooner.1.The brain of man is ______________.A.the centre of all men’s activitiesB.an electronic computerC.the most powerful and complex part of his bodyD.the most important aspect of his body2.Mathematicians have tried to make computers ___________.A.as the latest electronic equipmentB.which weighed over 10,000 kilosC.recall informationD.copy the way of brain working3.Chemists have found that ___________.A.the way the brain works is more complex than they thoughtB.the way is far more complicated than they had thoughtC.the way in which the brain works is much more complicatedD.the way the brain works is not more complicated than they had thought4.Scientists are trying to find out _______________.A.how language keeps children from learning soonerB.the way which prevents children from learning soonerC.the way we teach language to children soonerD.whether something about the way we teach language to children prevents children fromlearning sooner5.It is ____________ that man learned the fact that the brain is totally involved in the mental activity.A.during the 19th centuryB. before the 18th centuryC. after 1700D. in the past 50 yearsIV. Translation1.她意识到她是唯一被邀请参加会议的妇女. (conscious)2.无论你买什么样的保险, 都要本人来签署. (whichever)3.根据他的口音判断, 他肯定不是中国人. (judge)4.那些房顶是红色的房子是我们的新住宅区. (whose)5.不必在意他对此事的态度. (take notice of)基础练习(8)答案I. Choice1-5 ADBBB 6-10 CABDD 11-15 CDCDA 16-20 DDDAD21-25 DADAB 26–30 DBCBC 31-35 ADCAC 36-40 BBCDDII. Vocabulary:F/ I/ A/ J/ H/ C/ E/ G /BIII. Reading Comprehension1-5 CDCDCIV. Translation1.她意识到她是唯一被邀请参加会议的妇女. (conscious)She became conscious that she was the only woman (who was) invited to the meeting.2.无论你买什么样的保险, 都要本人来签署. (whichever)You must sign all the papers yourself, whichever kind of insurance you may buy.3.根据他的口音判断, 他肯定不是中国人. (judge)Judging by his accent, he can’t be Chinese.4.那些房顶是红色的房子是我们的新住宅区. (whose)Those buildings whose roofs are red are our new residential area.5.不必在意他对此事的态度. (take notice of)Don’t take any notice of his attitude toward it.。