大学课程-计算机操作系统-试卷及答案2

大工土力学与地基基础

机密★启用前 大连理工大学网络教育学院 2019年秋《土力学与地基基础》 期末考试复习题 ☆注意事项：本复习题满分共：400分。 一、单项选择题： 1、处于天然状态的砂土的密实度一般用哪一种试验来测定？（ C ） A．荷载试验 B．现场十字板剪切试验 C．标准贯入试验 D．轻便触探试验 2、评价下列说法的正误。（ D ） ①土的渗透系数越大，土的透水性也越大，土中的水力梯度也越大 ②任何一种土，只要水力梯度足够大，就可能发生流土和管涌 ③土中一点渗流力的大小取决于该点孔隙水总水头的大小 ④渗流力的大小不仅取决于水力梯度，还与其方向有关 A．①对 B．②对 C．③和④对 D．全不对 3、通过土粒承受和传递的应力称为（ A ）。 A．有效应力 B．总应力 C．附加应力 D．孔隙水压力 4、当各土层中仅存在潜水而不存在毛细水和承压水时，在潜水位以下土自重应力为（ C ）。A．静水压力 B．总应力 C．有效应力，不等于总应力 D．有效应力，等于总应力 5、所谓土的固结，主要是指（ B ）。 A．总应力引起超孔隙水压力增长的过程 B．超孔隙水压力消散，有效应力增长的过程

C．总应力不断增加 D．总应力和有效应力不断增加的过程 6、下列说法中正确的是（ B ）。 A．土抗剪强度与该面上总正应力直接相关 B．土抗剪强度与该面上有效正应力成正比 C．剪切破裂面发生在最大剪应力作用面上 D．破裂面与小主应力作用面夹角为45°+ /2 7、挡土墙向离开土体方向偏移至土体达到极限平衡状态，作用在墙上的土压力为（ A ）。 A．主动土压力 B．被动土压力 C．静止土压力 D．静水压力 8、对于（ D ），较易发生冲切剪切破坏。 A．低压缩性土 B．中压缩性土 C．密实砂土 D．软土 9、瑞典条分法在分析时忽略了（ A ）。 A．土条间作用力 B．土条间法向作用力 C．土条间切向作用力 D．土条间应力和应变 10、按地基承载力确定基础底面积时，传至基础底面上的荷载效应（ A ）。 A．按正常使用极限状态下荷载效应标准组合 B．按正常使用极限状态下荷载效应的准永久组合 C．应按承载能力极限状态下荷载效应基本组合，采用相应分项系数 D．应按承载能力极限状态下荷载效应基本组合，其分项系数均为1.0 11、饱和单轴极限抗压强度值（ A ）的岩石被称为硬质岩石，常见的硬质岩石有花岗岩、石灰岩等。A．≥30MPa B．≥40MPa C．＜30MPa D．＜40MPa 12、对无粘性土的工程性质影响最大的因素是（ B ）。 A．细度模数 B．密实度 C．矿物成分 D．颗粒的均匀程度 13、土透水性的强弱可用土的哪一个指标来反映？（ D ） A．弹性模量

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(完整版)大学土力学试题及答案

第1章 土的物理性质与工程分类 一．填空题 1． 颗粒级配曲线越平缓，不均匀系数越大，颗粒级配越好。为获得较大密实度，应选择级配良好的土料作为填方或砂垫层的土料。 2． 粘粒含量越多，颗粒粒径越小，比表面积越大，亲水性越强，可吸附弱结合水的含量越多，粘土的塑性指标越大 3． 塑性指标p L p w w I -=，它表明粘性土处于可塑状态时含水量的变化范围，它综合反映了粘性、可塑性等因素。因此《规范》规定：1710≤

p I 为粘土。 4． 对无粘性土，工程性质影响最大的是土的密实度，工程上用指标e 、r D 来衡量。 5． 在粘性土的物理指标中，对粘性土的性质影响较大的指标是塑性指数p I 。 6． 决定无粘性土工程性质的好坏是无粘性土的相对密度，它是用指标r D 来衡量。 7． 粘性土的液性指标p L p L w w w w I --= ，它的正负、大小表征了粘性土的软硬状态，《规范》 按L I 将粘性土的状态划分为坚硬、硬塑、可塑、软塑、流塑。 8． 岩石按风化程度划分为微风化、中等风化、强风化。 9． 岩石按坚固程度划分为硬质岩石，包括花岗岩、石灰岩等；软质岩石，包括页岩、泥岩等。 10．某砂层天然饱和重度20=sat γkN/m 3，土粒比重68.2=s G ，并测得该砂土的最大干重度1.17max =d γkN/m 3，最小干重度4.15min =d γkN/m 3，则天然孔隙比e 为0.68，最大孔隙比=max e 0.74，最小孔隙比=min e 0.57。 11．砂粒粒径范围是0.075~2mm ，砂土是指大于2mm 粒径累计含量不超过全重50%，而大于0.075mm 粒径累计含量超过全重50%。 12．亲水性最强的粘土矿物是蒙脱石，这是因为它的晶体单元由两个硅片中间夹一个铝片组成，晶胞间露出的是多余的负电荷，因而晶胞单元间联接很弱，水分子容易进入晶胞之间，而发生膨胀。 二 问答题 1． 概述土的三相比例指标与土的工程性质的关系？ 答：三相组成的性质，特别是固体颗粒的性质，直接影响土的工程特性。但是，同样一种土，密实时强度高，松散时强度低。对于细粒土，水含量少则硬，水含量多时则软。这说明土的性质不仅决定于三相组成的性质，而且三相之间量的比例关系也是一个很重要的影响因素。

大学英语试卷及答案(1)

《大学英语》试卷及答案 学号：姓名：专业层次: 分数： 一．单项选择题（本大题共15小题，每小题2分，共30分） 1. The Business Banking Department is on_____C_______second floor. A. / B. a C. the 2. Maria often has a walk with______C______parents in the morning. A. she B. their C. her 3. There_____B_______four children in the picture. A. is B. are C. have 4. I’d like______A______oranges, please. A. some B. any C. / 5. ______B______does the flat cost a month? A. How many B. How much C. How about 6. I’m bad at spelling, but Jane is_____B_______than me. A. bad B. worse C. less 7. He______B______in Beijing, but his parents____________in Hangzhou. A. live, lives B. lives, live C. live, live 8. - I’m enjoying the long summer evenings. -____A________am I. A. So B. Neither C. Nor 9. I usually get up_____A_______7 o’clock in the moring. A. at B. in C. on 10. It often______B______in winter in the north of China. A. snow B. snows C. is snowing 11. —The second bedroom isn’t big enough. —Yes, I agree. It is______B______. A. small B. too small C. enough small 12. This is his book. Could you give it_____A_______him？ A. to B. with C. for 13. I’m interested _____A_______cooking. A. in B. to C. at 14. I’d like to_______B_____you to a party this Saturday. A. join B. invite C. leave 15. When_______A_____for London? A. is she flying B. she flies C. she is going to fly 二．阅读理解（本大题共15小题，每小题2分，共30分）

新标准大学英语综合教程二 unit1 课后习题答案

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大学土力学试题及答案

第1章土的物理性质与工程分类 一.填空题 1.颗粒级配曲线越平缓，不均匀系数越大，颗粒级配越好。为获得较大密实度，应选择级配良好的土料作 为填方或砂垫层的土料。 2.粘粒含量越多，颗粒粒径越小，比表面积越大，亲水性越强，可吸附弱结合水的含量越多，粘土的塑性 指标越大 3.塑性指标I P r W L -W P ,它表明粘性土处于可塑状态时含水量的变化范围，它综合反 映了粘性、可塑性等因素。因此《规范》规定：10 ::： I P _17为粉质粘土，I P 17为粘土。 4.对无粘性土，工程性质影响最大的是土的密实度，工程上用指标e、D r来衡量。 5.在粘性土的物理指标中，对粘性土的性质影响较大的指标是塑性指数I P 6.决定无粘性土工程性质的好坏是无粘性土的相对密度，它是用指标D r来衡量。 W-W P 7.粘性土的液性指标I L ，它的正负、大小表征了粘性土的软硬状态，《规范》 W L-W p 按I L将粘性土的状态划分为坚硬、硬塑、可塑、软塑、流塑。 &岩石按风化程度划分为微风化、中等风化、强风化。 9.岩石按坚固程度划分为硬质岩石，包括花岗岩、石灰岩等；软质岩石，包括页岩、泥岩 10.某砂层天然饱和重度sat =20kN∕m3,土粒比重G^ 2.68 ,并测得该砂土的最大干重 度dmax =17.1kN∕m3，最小干重度dmin =15.4 kN/m3,则天然孔隙比e为0.68，最大孔隙比e f maχ =0.74,最小孔隙比e min =0.57。 11.砂粒粒径范围是0.075~2mm，砂土是指大于2mm粒径累计含量不超过全重50%，而大 于0.075mm粒径累计含量超过全重50%。 12.亲水性最强的粘土矿物是蒙脱石，这是因为它的晶体单元由两个硅片中间夹一个铝片组成，晶胞间露出的是多余的负电荷，因而晶胞单元间联接很弱，水分子容易进入晶胞之间，而发生膨胀。 二问答题 1.概述土的三相比例指标与土的工程性质的关系？ 答：三相组成的性质，特别是固体颗粒的性质，直接影响土的工程特性。但是，同样一种土， 密实时强度高，松散时强度低。对于细粒土，水含量少则硬，水含量多时则软。这说明土的性质不仅决定于

大学英语试卷及答案

《大学英语》试卷考试时间：90分钟闭卷任课老师： 班级：学号：姓名：成绩：Ⅰ.Match the words in column A with the explanations in column B. (15 points) Column A Column B 1.term a.. easy to get to 2.department b. accept sth.as true 3.overseas c. give great pleasure to 4.charge d. one of several division in a university, etc. 5.worth e. abroad 6.believe f. one of the periods into which the academic year is divided 7.somewhat g.. become less tense; rest 8.convenient h.. good of useful enough to do or have 9.relax i. responsibility, care or control 10.delight j. a little II.Multiple choice questions (15 points) There are five sentences in this section. Beneath each sentence there are four choices marked A, B, C and D. Choose one or more that you think are suitable. 11. Take your camera with you. We’d like to take some of the beautiful park. A. paintings B. pictures C. files D. films 12. The is very useful. She can helps me to find many good books. A. employer B. member C. monitor D. librarian 13. Small cars are of fuel, so they have more appeal for consumers. A. free B. short C. typical D. economical 14. Next Sunday is her birthday.I ______her a bicycle as a present. A.allow B.give C.offer D.promise 15. I was in s small countryside in China. A. brought up B. bring up C. raised up D. raise up 16. Miss Yang is likely to be for promotion. A. sent B. recommended C. advised D. reported 17. The number of people invited _________ fifty, but a number of them

土力学与地基基础习题集与答案第2章

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图2-1 13.影响土压实性的主要因素什么？ 14.什么是最优含水量和最大干密度？ 15.为什么含水量<最优含水量op时，干密度d随增加而增大，>op时，d随增加而减小？ 16. 在填方压实工程中，土体是否能压实到完全饱和状态？为什么？（华南理工大学2006年攻读硕士学位研究生入学考试） 17.影响土击实效果的因素有哪些？ 18. 为什么仅用天然含水量说明不了粘性土的物理状态，而用液性指数却能说明？（长安大学2007年硕士研究生入学考试） 二、填空题 1.粘性土中含水量不同，可分别处于、、、、四种不同的状态。其界限含水量依次是、、。 2.对砂土密实度的判别一般采用以下三种方法、、。 3.土的天然密度、土粒相对密度、含水量由室内试验直接测定，其测定方法分别是、、。 4. 粘性土的不同状态的分界含水量液限、塑限、缩限分别用、、测定。 5. 土的触变性是指。 6. 土的灵敏度越高，其结构性越强，受扰动后土的强度降低越。 7. 作为建筑地基的土，可分为岩石、碎石土砂土、、粘性土和人工填土。 8. 碎石土是指粒径大于mm的颗粒超过总重量50%的土。 9.土的饱和度为土中被水充满的孔隙与孔隙之比。 10. 液性指数是用来衡量粘性土的状态。 三、选择题 1．作为填土工程的土料，压实效果与不均匀系数C u的关系：( ) （A）C u大比C u小好 (B) C u小比C u大好 (C) C u与压实效果无关 2.有三个同一种类土样，它们的含水率都相同，但是饱和度S r不同，饱和度S r越大的土，其压缩性有何变化？( ) (A)压缩性越大 (B) 压缩性越小 (C) 压缩性不变

新标准大学英语2视听说教程答案

Unit 1 Outside view Activity 1 Activity 2 one of the best universities most talented students well-known around the world have open doors good social life you want it to be on another campus it's a fun place go to concerts during the week Activity 3 library system online three / 3 four / 4 Brian leisure purposes the libraries listening in

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