文档库 最新最全的文档下载
当前位置:文档库 › 大学课后习题下载(为什么到大四才知道!!!!)

大学课后习题下载(为什么到大四才知道!!!!)

大学课后习题下载(为什么到大四才知道!!!!)
大学课后习题下载(为什么到大四才知道!!!!)

公共课程

https://www.wendangku.net/doc/8916019274.html,/forum-6-1.html

新视野大学英语读写教程第四册答案

https://www.wendangku.net/doc/8916019274.html,/thread-7-1-1.html

新视野大学英语读写教程第三册答案

https://www.wendangku.net/doc/8916019274.html,/thread-6-1-1.html

新视野大学英语读写教程第二册答案

https://www.wendangku.net/doc/8916019274.html,/thread-5-1-1.html

新视野大学英语读写教程第一册答案

https://www.wendangku.net/doc/8916019274.html,/thread-4-1-1.html

新视野大学英语视听说答案3-2

https://www.wendangku.net/doc/8916019274.html,/thread-175-1-1.html 新视野大学英语视听说答案3-1

https://www.wendangku.net/doc/8916019274.html,/thread-174-1-1.html 《马克思主义基本原理概论》习题答案参考https://www.wendangku.net/doc/8916019274.html,/thread-13-1-1.html 全新版大学英语听说教程mp3下载

https://www.wendangku.net/doc/8916019274.html,/thread-11-1-1.html 《马克思主义基本原理概论》复习思考题参考答案https://www.wendangku.net/doc/8916019274.html,/thread-12-1-1.html 新概念英语文本1-4册

https://www.wendangku.net/doc/8916019274.html,/thread-10-1-1.html 毛邓三课后题答案

https://www.wendangku.net/doc/8916019274.html,/thread-8-1-1.html

中国近代史纲要(高教版)课后答案完整版https://www.wendangku.net/doc/8916019274.html,/thread-3-1-1.html

概率论与数理统计课后答案及辅导(浙大三版) https://www.wendangku.net/doc/8916019274.html,/thread-2-1-1.html

新视野大学英语视听说教程mp3下载

https://www.wendangku.net/doc/8916019274.html,/thread-1-1-1.html

哲学类

https://www.wendangku.net/doc/8916019274.html,/forum-5-1.html

认识世界的伟大工具[整理]

https://www.wendangku.net/doc/8916019274.html,/thread-168-1-1.html 逻辑学课件、练习答案、案例评析

https://www.wendangku.net/doc/8916019274.html,/thread-167-1-1.html 普通逻辑课后习题答案

https://www.wendangku.net/doc/8916019274.html,/thread-67-1-1.html 任汝芬成都冲刺讲座要点整理

https://www.wendangku.net/doc/8916019274.html,/thread-16-1-1.html 张俊芳说的哲学需要背的内容(主观题)

https://www.wendangku.net/doc/8916019274.html,/thread-15-1-1.html 【人教版】哲学常识基础知识记忆手册(上下册)https://www.wendangku.net/doc/8916019274.html,/thread-14-1-1.html 经济学类

https://www.wendangku.net/doc/8916019274.html,/forum-4-1.html

经济学论文

https://www.wendangku.net/doc/8916019274.html,/thread-164-1-1.html

罗森_财政学_第七版(英文版)_课后答案

https://www.wendangku.net/doc/8916019274.html,/thread-163-1-1.html

工程经济习题

https://www.wendangku.net/doc/8916019274.html,/thread-162-1-1.html

西南财经大学_财政学(王国清教授,很强很厉害)https://www.wendangku.net/doc/8916019274.html,/thread-161-1-1.html

微观经济学答案

https://www.wendangku.net/doc/8916019274.html,/thread-160-1-1.html

西方经济学课后习题答案(宏观部分)

https://www.wendangku.net/doc/8916019274.html,/thread-159-1-1.html 《财政学》课件(基于邓子基教授教材)

https://www.wendangku.net/doc/8916019274.html,/thread-64-1-1.html

法学类

https://www.wendangku.net/doc/8916019274.html,/forum-15-1.html

国际共产主义运动史专题训练

https://www.wendangku.net/doc/8916019274.html,/forum-15-1.html

刑法优秀课件(第十一讲至第十五讲)

https://www.wendangku.net/doc/8916019274.html,/thread-137-1-1.html

刑法优秀课件(第一讲至第十讲)

https://www.wendangku.net/doc/8916019274.html,/thread-136-1-1.html

民法学笔记

https://www.wendangku.net/doc/8916019274.html,/thread-135-1-1.html

刑法案例及题解大全

https://www.wendangku.net/doc/8916019274.html,/thread-134-1-1.html

教育学类

https://www.wendangku.net/doc/8916019274.html,/forum-16-1.html

外国教育史课后习题答案

https://www.wendangku.net/doc/8916019274.html,/thread-150-1-1.html

文学类

https://www.wendangku.net/doc/8916019274.html,/forum-22-1.html

英语专业四级听写50篇文档

https://www.wendangku.net/doc/8916019274.html,/thread-158-1-1.html

语言学教程复习题与答案(胡壮麟主编)

https://www.wendangku.net/doc/8916019274.html,/thread-153-1-1.html

《语言学概论》新版教材习题答案(自考)

https://www.wendangku.net/doc/8916019274.html,/thread-152-1-1.html

古代汉语习题及参考答案(上册)

https://www.wendangku.net/doc/8916019274.html,/thread-151-1-1.html

现当代文学习题参考答案(第一章至第四章)

https://www.wendangku.net/doc/8916019274.html,/thread-148-1-1.html

中英对照:乔治-W-布什就任第43任美国总统的演讲全文https://www.wendangku.net/doc/8916019274.html,/thread-143-1-1.html

语言学教程课后答案(胡壮麟主编)

https://www.wendangku.net/doc/8916019274.html,/thread-142-1-1.html

现当代文学习题参考答案(综合练习)

https://www.wendangku.net/doc/8916019274.html,/thread-141-1-1.html 国际商务英语复习题

https://www.wendangku.net/doc/8916019274.html,/thread-140-1-1.html 21世纪英语第1册读写教程课后答案

https://www.wendangku.net/doc/8916019274.html,/thread-65-1-1.html 大学英语精读第2册课文翻译

https://www.wendangku.net/doc/8916019274.html,/thread-66-1-1.html 历史学类

https://www.wendangku.net/doc/8916019274.html,/forum-18-1.html

世界史专业课名词解释

https://www.wendangku.net/doc/8916019274.html,/thread-166-1-1.html 世界历史简答题答案

https://www.wendangku.net/doc/8916019274.html,/thread-68-1-1.html 理学类

https://www.wendangku.net/doc/8916019274.html,/forum-19-1.html

生物化学(第三版)课后习题详细解答

https://www.wendangku.net/doc/8916019274.html,/thread-171-1-1.html 有机化学(汪小兰)答案

https://www.wendangku.net/doc/8916019274.html,/thread-170-1-1.html 化工原理复习资料

https://www.wendangku.net/doc/8916019274.html,/thread-58-1-1.html 有机化学(徐寿昌)习题解答

https://www.wendangku.net/doc/8916019274.html,/thread-26-1-1.html

《有机化学》胡宏纹(第二版)课后答案https://www.wendangku.net/doc/8916019274.html,/thread-23-1-1.html 复变函数习题全解及导学【西安交通大学】https://www.wendangku.net/doc/8916019274.html,/thread-22-1-1.html 统计学习题答案

https://www.wendangku.net/doc/8916019274.html,/thread-21-1-1.html 大学物理练习册D册解答

https://www.wendangku.net/doc/8916019274.html,/thread-20-1-1.html 大学物理练习册C册解答

https://www.wendangku.net/doc/8916019274.html,/thread-19-1-1.html 大学物理练习册B册解答

https://www.wendangku.net/doc/8916019274.html,/thread-18-1-1.html 大学物理练习册A册解答

https://www.wendangku.net/doc/8916019274.html,/thread-17-1-1.html 工学类

https://www.wendangku.net/doc/8916019274.html,/forum-20-1.html

C++课件

https://www.wendangku.net/doc/8916019274.html,/thread-173-1-1.html 路基路面工程习题答案

https://www.wendangku.net/doc/8916019274.html,/thread-172-1-1.html'电工学第六版(秦曾煌)课后答案

https://www.wendangku.net/doc/8916019274.html,/thread-9-1-1.html

数字信号处理答案

电机学习题答案(张松林主编)第三部分:交流机https://www.wendangku.net/doc/8916019274.html,/thread-62-1-1.html 电机学习题答案(张松林主编)第二部分:变压器https://www.wendangku.net/doc/8916019274.html,/thread-61-1-1.html 电机学习题答案(张松林主编)第一部分:直流机https://www.wendangku.net/doc/8916019274.html,/thread-60-1-1.html 软件工程——原理、方法与应用优秀课件

https://www.wendangku.net/doc/8916019274.html,/thread-59-1-1.html 建筑工程概论课件

https://www.wendangku.net/doc/8916019274.html,/thread-57-1-1.html 环境工程课程设计资料

https://www.wendangku.net/doc/8916019274.html,/thread-56-1-1.html 电磁场习题解第八章电磁辐射与天线

https://www.wendangku.net/doc/8916019274.html,/thread-55-1-1.html 电磁场习题解第七章导行电磁波

https://www.wendangku.net/doc/8916019274.html,/thread-54-1-1.html 电磁场习题解第六章平面电磁波

https://www.wendangku.net/doc/8916019274.html,/thread-53-1-1.html 电磁场习题解第六章平面电磁波

https://www.wendangku.net/doc/8916019274.html,/thread-53-1-1.html 电磁场习题解第五章时变电磁场

https://www.wendangku.net/doc/8916019274.html,/thread-52-1-1.html 电磁场习题解第四章恒定磁场

电磁场习题解第三章恒定电流场

https://www.wendangku.net/doc/8916019274.html,/thread-50-1-1.html

电磁场习题解第二章

https://www.wendangku.net/doc/8916019274.html,/thread-49-1-1.html

电磁场习题解第一章矢量场

https://www.wendangku.net/doc/8916019274.html,/thread-48-1-1.html

电机学习题集及答案

https://www.wendangku.net/doc/8916019274.html,/thread-47-1-1.html

数据库复习资料

https://www.wendangku.net/doc/8916019274.html,/thread-46-1-1.html

电路第四版习题详细答案

https://www.wendangku.net/doc/8916019274.html,/thread-45-1-1.html

计算机三级网络技术复习资料总录

https://www.wendangku.net/doc/8916019274.html,/thread-44-1-1.html

生物化学(第三版)课后习题详细解答

https://www.wendangku.net/doc/8916019274.html,/thread-25-1-1.html IBM-PC 汇编语言程序设计习题答案

https://www.wendangku.net/doc/8916019274.html,/thread-24-1-1.html

医学类

https://www.wendangku.net/doc/8916019274.html,/forum-21-1.html

《遗传学》朱军主编课后习题答案(11/16~16/16)https://www.wendangku.net/doc/8916019274.html,/thread-43-1-1.html

《遗传学》朱军主编课后习题答案(6/16~10/16)https://www.wendangku.net/doc/8916019274.html,/thread-42-1-1.html 《遗传学》朱军主编课后习题答案(1/16~5/16)https://www.wendangku.net/doc/8916019274.html,/thread-41-1-1.html

管理学类

https://www.wendangku.net/doc/8916019274.html,/forum-17-1.html

管理信息系统课件下载

https://www.wendangku.net/doc/8916019274.html,/thread-40-1-1.html

基础会计学课件下载

https://www.wendangku.net/doc/8916019274.html,/thread-39-1-1.html

管理信息系统优秀课件

https://www.wendangku.net/doc/8916019274.html,/thread-38-1-1.html

北大光华管理学院MBA经典案例全案

https://www.wendangku.net/doc/8916019274.html,/thread-37-1-1.html

中高级财务管理优秀课件

https://www.wendangku.net/doc/8916019274.html,/thread-36-1-1.html

财务管理学优秀课件

https://www.wendangku.net/doc/8916019274.html,/thread-35-1-1.html

货币银行学优秀学课件

https://www.wendangku.net/doc/8916019274.html,/thread-34-1-1.html

财务会计课件

https://www.wendangku.net/doc/8916019274.html,/thread-33-1-1.html

现代物流管理

https://www.wendangku.net/doc/8916019274.html,/thread-32-1-1.html 现代工业企业管理

https://www.wendangku.net/doc/8916019274.html,/thread-31-1-1.html 管理学原理课件课件下载

https://www.wendangku.net/doc/8916019274.html,/thread-30-1-1.html 管理学概论课件下载

https://www.wendangku.net/doc/8916019274.html,/thread-29-1-1.html 会计科目和主要帐目处理下载

https://www.wendangku.net/doc/8916019274.html,/thread-28-1-1.html 中级财务会计优秀课件】

各大学教材课后习题答案网址

各大学教材课后习题答案网址 《线性代数》(同济第四版)课后习题答案(完整版) 高等数学(同济第五版)课后答案(PDF格式,共527页) 中国近现代史纲要课后题答案 曼昆《经济学原理》课后习题解答 21世纪大学英语读写教程(第三册)参考答案 谢希仁《计算机网络教程》(第五版)习题参考答案(共48页) 《概率论与数理统计》习题答案 http:// 《模拟电子技术基础》详细习题答案(童诗白,华成英版,高教版) 《机械设计》课后习题答案(高教版,第八版,西北工业大学) 《大学物理》完整习题答案 .com/viewthread.php?tid=217&fromuid=164951 《管理学》课后答案(周三多) 机械设计基础(第五版)习题答案[杨可桢等主编] 程守洙、江之永主编《普通物理学》(第五版)详细解答及辅导 .php?tid=3&fromuid=164951 新视野大学英语课本详解(四册全) 21世纪大学英语读写教程(第四册)课后答案 新视野大学英语读写教程3册的课后习题答案 1

新视野大学英语第四册答案(第二版) 《中国近现代史》选择题全集(共含250道题目和答案) 《电工学》课后习题答案(第六版,上册,秦曾煌主编) 完整的英文原版曼昆宏观、微观经济学答案 《数字电子技术基础》习题答案(阎石,第五版) 《电路》习题答案上(邱关源,第五版) 《电工学》习题答案(第六版,秦曾煌) https://www.wendangku.net/doc/8916019274.html,/viewthread.php?tid=112&fromuid=164951 21世纪大学英语读写教程(第三册)课文翻译 《生物化学》复习资料大全(3套试卷及答案+各章习题集) 《模拟电子技术基础》课后习题答案(共10章)ewthread.php?tid=21&fromuid=164951 《概率论与数理统计及其应用》课后答案(浙江大学盛骤谢式千编著)《理论力学》课后习题答案(赫桐生,高教版) 《全新版大学英语综合教程》(第四册)练习答案及课文译文viewthread.php?tid=78&fromuid=164951 《化工原理答案》课后习题答案(高教出版社,王志魁主编,第三版)《国际贸易》课后习题答案(海闻P.林德特王新奎) 大学英语综合教程1-4册练习答案 read.php?tid=1282&fromuid=164951 《流体力学》习题答案 《传热学》课后习题答案(第四版) 高等数学习题答案及提示

大学英语精读第四册课后翻译题及答案

UNIT1 1.我们接到通知,财政部长将于次日接见我们。 We were informed that the Minister of Finance was to give us an audience / receive us the next day. 2.我觉得很奇怪,他似乎不记得自己的生日。 I thought it odd that he didn’t seem to remember his own birthday. 3.学期论文最迟在下星期二交来,可是至今大部分学生却几无进展。 Next Tuesday is the deadline for handing in the term papers, but most students have hardly made a dent in the work so far. 4.看到学生人数不断减少,校长心里很难受。(pain) It pained the headmaster to find the number of students shrinking. 5.在那个国家一般用现金付账,但支票变得普遍起来了,不久会代替现金作为人们结账的一种方式。 Cash is commonly used in paying bills in that country, but checks are becoming more popular and will, in a short while, replace cash as a way for people to settle their accounts. 6.该公司声称,这条河流的污染不是它造成的。 The company claims that it is not responsible for the pollution in the river. UNIT2 1.比尔已是个成熟的小伙子,不再依赖父母替他做主。 Bill is a mature young man who is no longer dependent on his parents for decisions. 2.这个地区有大量肉类供应,但新鲜果蔬奇缺。 There are abundant supplies of meat in this region, but fresh fruit and vegetables are scarce. 3.工程师们依靠工人们的智慧发明了一种新的生产方法,使生产率得以提高。 Drawing on the wisdom of the workers, the engineers invented a new production method that led to increased productivity. 4.他花了许多时间准备数学考试,因此当他获知自己只得了个B时感到有点失望。 He spent a lot of time preparing for his disappointed to learn that he got only a B. 5.我们有充实的时间从从容容吃顿午饭。 We have ample time for leisurely lunch. 6.地方政府不得不动用储备粮并采取其他紧急措施,以渡过粮食危机。 The local government had to draw on its grain reserves and take other emergency measures so as to pull through the food crisis. UNIT3 1.萧伯纳在他一个剧本的前言中提出这样的看法:今天人们比在中世纪时更加迷信。 In the preface to one of his plays, Bernard Shaw advances the idea that people are more superstitious today than they were in the Middle Ages. 2. 丈夫死后,她只好独自挑起扶养五个孩子的经济重担。 After her husband died, she had to bear the severe financial burden of raising five children by herself. 3.证明或驳斥某个论点的最好办法之一是从亲身经历中举出例子。 One of the best ways to prove or refute a point is to cite examples from your own experience. 4.亨特说贝蒂老是夸大他的缺点,这话很可能会引起一场争吵。 Hunt’s statement that Betty always exaggerates his faults may well lead to a quarrel. 5.我当时对她绝对信任,无论她告诉我什么,我都会相信。 I trusted her so much that I would have swallowed any story she told me.

大学物理(第四版)课后习题及答案 质点

题1.1:已知质点沿x 轴作直线运动,其运动方程为3322)s m 2()s m 6(m 2t t x --?-?+= 。求(l )质点在运动开始后s 0.4内位移的大小;(2)质点在该时间内所通过的路程。 题1.1解:(1)质点在4.0 s 内位移的大小 m 3204-=-=?x x x (2)由 0)s m 6()s m 12(d d 232=?-?=--t t t x 得知质点的换向时刻为 s2=P t (t = 0不合题意) 则:m 0.8021=-=?x x x m 40x 242-=-=?x x 所以,质点在4.0 s 时间间隔内的路程为 m 4821=?+?=x x s 题1.2:一质点沿x 轴方向作直线运动,其速度与时间的关系如图所示。设0=t 时,0=x 。试根据已知的图t v -,画出t a -图以及t x -图。 题1.2解:将曲线分为AB 、BC 、CD 三个过程,它们对应的加速度值分别为 2A B A B AB s m 20-?=--=t t v v a (匀加速直线运动) 0BC =a (匀速直线) 2C D C D CD s m 10-?-=--= t t v v a (匀减速直线运动) 根据上述结果即可作出质点的a -t 图 在匀变速直线运动中,有 2002 1at t v x x + += 间内,质点是作v = 201s m -?的匀速直线运动,其x -t 图是斜率k = 20的一段直线。 题1.3:如图所示,湖中有一小船。岸上有人用绳跨过定滑轮拉船靠岸。设滑轮距水面高度为h ,滑轮到原船位置的绳长为0l ,试求:当人以匀速v 拉绳,船运动的速度v '为多少?

大学英语课后练习答案

Unit 11. Vocabulary 1) insert 2) on occasion 3) investigate 4) In retrospect 5) initial 6) phenomena 7) attached 8) make up for 9) is awaiting 10) not …in the least 11) promote 12) emerged 2. Rewrite each sentence 1) There is a striking contrast between the standard of living in the north of the country and the south. 2) Natural fiber is said to be superior to synthetic fiber. 3) The city's importance as a financial center has evolved slowly. 4) His nationality is not relevant to whether he is a good lawyer. 5) The poems by a little-known sixteenth-century Italian poet have found their way into some English magazines. 3. 1) Chinese isn't a subject that can be picked up in a month. You can't accomplish your goal of mastering the language unless you work at it for years. Well, it sounds as if I'm exag-gerating the difficulties, but the fact is I'm only telling the truth. 2) The principal is somewhat disappointed with the performance of the children. From what she has gathered, some of the teaching staff have neglected their pupils. She has just announced that strict work regulations have been made and that they apply to both Chinese and overseas teachers. 3) The teacher-directed and the child-directed approaches to teaching art represent two ex-tremes of opinion. Too many teacher-directed activities cannot be expected to effectively assist children in learning because of the rigid structure. On the other hand, too many child-directed activities may see a curriculum that is totally unstructured and out of con-trol. There are valid reasons to believe a teacher-guided approach would be a superior way to guide children's development. This approach combines some form of structure with the child leading the direction. II. Confusable Words 1. 1) continual 3) continual

大学计算机第四版课后习题答案

大学计算机第四版课后习题答案
第一章 1.计算机的发展经历了机械式计算机、 (B) 式计算机和电子计算机三个阶 段。 (A)电子管 (B)机电 (C)晶体管 (D)集成电路 2.英国数学家巴贝奇曾设计了一种程序控制的通用(D)。 (A)加法器 (B)微机 (C)大型计算机 (D)分析机 3. 1939 年,美国爱荷华州立大学研制成功了一台大型通用数字电子计算机 ( D) 。 (A)ENIAC (B)Z3 (C)IBM PC (D)ABC 4.爱德华?罗伯茨 1975 年发明了第一台微机(C)。 (A)Apple II (B)IBM PC (C)牛郎星 (D)织女星 5.1981 年 IBM 公司推出了第一台(B)位个人计算机 IBM PC 5150。 (A)8 (B)16 (C)32 (D)64 6.我国大陆 1985 年自行研制成功了第一台 PC 兼容机(C)0520 微机。 (A)联想 (B)方正 (C)长城 (D)银河 7.摩尔定律指出,微芯片上集成的晶体管数目每(C)个月翻一番。 (A)6 (B)12 (C)18 (D)24 8.第四代计算机采用大规模和超大规模(B)作为主要电子元件。 (A)微处理器 (B)集成电路 (C)存储器 (D)晶体管 9.计算机朝着大型化和(C)化两个方向发展。 (A)科学 (B)商业 (C)微机 (D)实用 10.计算机中最重要的核心部件是(A)。
1 / 16

(A)CPU (B)DRAM (C)CD-ROM (D)CRT 11.计算机类型大致可以分为:大型计算机、(A)、嵌入式系统三类。 (A)微机 (B)服务器 (C)工业 PC (D)笔记本微机 12.大型集群计算机技术是利用许多台单独的(D)组成一个计算机群。 (A)CPU (B)DRAM (C)PC (D)计算机 13.(C)系统是将微机或微机核心部件安装在某个专用设备之内。 (A)大型计算机 (B)网络 (C)嵌入式 (D)服务器 14.冯结构计算机包括:输入设备、输出设备、存储器、控制器、 ( B) 五大组成部 分。 (A)处理器 (B)运算器 (C)显示器 (D)模拟器 15.在冯?诺伊曼计算机模型中,存储器是指(A)单元。 (A)内存 (B)外存 (C)缓存 (D)闪存 16.指令设计及调试过程称为(D)设计。 (A)系统 (B)计算机 (C)集成 (D)程序 17.指令的数量与类型由(A)决定。 (A)CPU (B)DRAM (C)SRAM (D)BIOS 18.一条指令通常由(B)和操作数两个部分组成。 (A)程序 (B)操作码 (C)机器码 (D)二进制数 19.硬件系统可以从系统结构和系统(A)两个方面进行描述。 (A)组成 (B)分析 (C)安全 (D)流程 20.CPU 性能的高低,往往决定了一台计算机(D)的高低。 (A)功能 (B)质量 (C)兼容性 (D)性能
2 / 16

大学英语精读第四册课后答案

大学英语精读第三版第四册答案 Unit1 翻译 1) 我们接到通知,财政部长将于次日接见我们。 We were informed that the Minister of Finance was to give us an audience /receive us the next day. 2) 我觉得很奇怪,他似乎不记得自己的生日。 I thought it odd that he didn't seem to remember his own birthday. 3) 学期论文最迟应在下星期二交来,可是至今大部分学生却几无进展。 Next Tuesday is the deadline for handing in the term papers, but most students have hardly made a dent in the work so far. 4) 看到学生人数不断减少,校长心里很难受。(pain) It pained the headmaster to find the number of students shrinking. 5) 在那个国家一般用现金付账,但支票变得普遍起来了,不久会代替现金作为人们结账的一种方式。 Cash is commonly used in paying bills in that country, but checks are becoming more popular and will, in a short while, replace cash as a way for people to settle their accounts. 6) 该公司声称,这条河流的污染不是它造成的。 The company claims that it is not responsible for the pollution in the river. Unit2 翻译 1) 比尔已是个成熟的小伙子,不再依赖父母替他做主。 Bill is a mature young man who is no longer dependent on his parents for decisions. 2) 这个地区有大量肉类供应,但新鲜果蔬奇缺。 There are abundant supplies of meat in this region, but fresh fruit and vegetables are scarce. 3) 工程师们依靠工人们的智慧发明了一种新的生产方法,使生产率得以提高。 Drawing on the wisdom of the workers, the engineers invented a new production method that led to increased productivity. 4) 他花了许多时间准备数学考试,因此当他获知自己只得了个B时感到有点失望。 He spent a lot of time preparing for his math exam. Hence he was somewhat disappointed to learn that he got only a B. 5) 我们有充裕的时间从从容容吃顿午饭。 We have ample time for a leisurely lunch. 6) 地方政府不得不动用储备粮并采取其他紧急措施,以渡过粮食危机。

大学物理课后习题答案(全册)

《大学物理学》课后习题参考答案 习 题1 1-1. 已知质点位矢随时间变化的函数形式为 )ωt sin ωt (cos j i +=R r 其中ω为常量.求:(1)质点的轨道;(2)速度和速率。 解:1) 由)ωt sin ωt (cos j i +=R r 知 t cos R x ω= t sin R y ω= 消去t 可得轨道方程 222R y x =+ 2) j r v t Rcos sin ωωt ωR ωdt d +-== i R ωt ωR ωt ωR ωv =+-=2 122 ])cos ()sin [( 1-2. 已知质点位矢随时间变化的函数形式为j i r )t 23(t 42++=,式中r 的单位为m ,t 的单位为s .求: (1)质点的轨道;(2)从0=t 到1=t 秒的位移;(3)0=t 和1=t 秒两时刻的速度。 解:1)由j i r )t 23(t 42++=可知 2t 4x = t 23y += 消去t 得轨道方程为:2)3y (x -= 2)j i r v 2t 8dt d +== j i j i v r 24)dt 2t 8(dt 1 1 +=+==??Δ 3) j v 2(0)= j i v 28(1)+= 1-3. 已知质点位矢随时间变化的函数形式为j i r t t 22+=,式中r 的单位为m ,t 的单

位为s .求:(1)任一时刻的速度和加速度;(2)任一时刻的切向加速度和法向加速度。 解:1)j i r v 2t 2dt d +== i v a 2dt d == 2)21 22 12)1t (2] 4)t 2[(v +=+= 1 t t 2dt dv a 2 t +== n a == 1-4. 一升降机以加速度a 上升,在上升过程中有一螺钉从天花板上松落,升降机的天花板与底板相距为d ,求螺钉从天花板落到底板上所需的时间。 解:以地面为参照系,坐标如图,升降机与螺丝的运动方程分别为 2012 1 at t v y += (1) 图 1-4 2022 1 gt t v h y -+= (2) 21y y = (3) 解之 t = 1-5. 一质量为m 的小球在高度h 处以初速度0v 水平抛出,求: (1)小球的运动方程; (2)小球在落地之前的轨迹方程; (3)落地前瞬时小球的t d d r ,t d d v ,t v d d . 解:(1) t v x 0= 式(1) 2gt 2 1 h y -= 式(2) j i r )gt 2 1 -h (t v (t)20+= (2)联立式(1)、式(2)得 2 02 v 2gx h y -= (3) j i r gt -v t d d 0= 而 落地所用时间 g h 2t =

大学英语2课后习题英语答案

新视野大学英语读写教程第二版第二册课后练习答案 unit 1 Section A: Vocabulary III. 1. charge 2. convention 3. efficient 4. obtain 5. competent 6. asessing 7. fulfill 8. conducting 9. consequently 10. significance IV. 1. behind 2. at 3. in 4.out 5. to 6. to 7.in 8.with 9.but 10. for V. 1. L 2. C 3.D 4. N 5. O 6.A 7. E 8.G 9.I 10. K Word Building VI. https://www.wendangku.net/doc/8916019274.html,mitment 2. attraction 3. appointment 4.impression 5. civilization https://www.wendangku.net/doc/8916019274.html,position 7.confusion 8.congratulation 9.consideration 10.explanation 11. acquisition 12.depression VII. 1.advisable 2.disirable 3.favorable 4. considerable 5. remarkable 6.preferable 7.drinkable 8.acceptable Sentence Structure VIII. 1.much less can he write English articles 2.much less can he manage a big company 3.much less could he carry it upstairs 4.much less have I spoken to him 5.much less to read a lot outside of it IX. 1.Having meals at home can cost as little as two or three dollars, whereas eating out at a restaurant is always more expensive. 2.We thought she was rather proud,whereas in fact she was just very shy. 3.We have never done anything for them, whereas they have done so much for us. 4.Natalie prefers to stay for another week, whereas her husband prefers to leave immediately. 5.Some praise him highly,whereas others put him down severely. Translation X. 1.She wouldn't take a drink, much less could she stay for dinner. 2.He thought I was lying to him,whereas I was telling the truth. 3.How do you account for the fact that you have been late every day this week?

大学英语课后习题答案解析

U n i t1V o c a b u l a r y1: 1、My job varies between the extremely tedious and the annoyingly busy. On balance I think I'm happier during the really busy times; no time to think about how bored I am。 我的工作既有特无聊的时候,也有忙得要命的时候。但总的来说,我在真正忙的时候高兴些,因为在那个时候,我没时间去想我有多厌倦。 2、It is the nature of the wise to resist leasures, but the foolish to be a slave to them。 明智之人天生会抵制享乐,而愚蠢之人却成了它的奴隶。 3、I figure out a good team of dogs, hitched to a light sled, can haul 1,000 pounds of goods. 一组健壮的狗可以用轻小的雪橇拉动1,000磅的货物。 4、In the story, the little girl has a wicked stepmother, who makes her life a misery. 在这个故事中,小女孩有一个心肠很坏的继母,让她生活很痛苦。 5、Nothing ever becomes real till it is experienced -- even a proverb is no proverb to you till your life has illustrated it. 眼见为实——即使是谚语在你没有在生活中得到证明时,也不一定正确。 6、Nowadays almost all libraries are finding it increasingly difficult to remain within Their budget. 当前,几乎所有图书馆发现靠他们的预算生存下去越来越难。 7、You can increase a tyre’s grip in winter by slightly lowering its pressure . 冬天可以稍微放点气来增强轮胎的抓力。 8、Lakes Superior, Huron, Erie, and Ontario are shared by the United States and Canada, and form part of the boundary between the two countries. 苏比利尔湖、修伦湖、伊利湖和安大略湖归美国和加拿大共同所有,也构成了两国的部分分界线。 9、The police are investigating the three men allegedly involved in organizing and carrying out the bank robbery. 警方正在调查这三名涉嫌参与组织和实施银行抢劫案的人。 10、I do not doubt in the least that inflation leads to economic decline. 我毫不怀疑,通货膨胀导致经济衰退。 11、A blizzard was blasting great drifts of snow across the lake.(吹起) 暴风雪席卷了整个湖面。 12、Tim says just about everybody will be affected by the tax increase, but I’m sure he’s exaggerating. (几乎) 蒂姆说,几乎每个人都会受到增税的影响,但我肯定他是在夸大其词。 Vocabulary 2 : an effort to feel better , I started to make small changes in my life and cut down /back from 20 cigarettes in day to a mere three or four. 为了感觉更好,我开始做一些小小的改变在我的生活中,以及减少从每天20支香烟到大约只有三或四。 I wasted electricity as you do at home , my dad would make me pick up the bill. 如果我像你一样浪费在家浪费电的话,我的爸爸将肯定会让我支付账单(自己买单)。 can get by with four computers at the moment , but we’ll need a couple more when the new staff arrive.

大学英语精读4课后汉译英

unit 1 1.我们接到通知,财政部长将于次日接见我们。 We were informed that the Minister of Finance was to meet us the next day. 2.我觉得很奇怪,他似乎不记得自己的生日。 I thought it odd that he didn’t seem to remember his own birthday. 3.学期论文最迟应在下星期二交来,可是大部分学生却至今几无进展。 Next Tuesday is the deadline for handing in the term papers, but most students have hardly made a dent in the work so far. 4.看到学生人数不断减少,校长心里很难受。 It pained the headmaster to find the number of students shrinking. 5.在那个国家一般用现金付账,但支票变得普通起来了,不久会代替现金作为人们结账的一种方式。 Cash is commonly used in paying bills in that country, but checks are becoming more popular and will, in a short while, replace cash as a way for people to settle their accounts. 6.该公司声称,这条河流的污染不是它造成的。 the company claims that it is not responsible for the pollution in river. unit2 1.比尔已是个成熟的小伙子,不再依赖父母替他作主。 Bill is a mature young man who is no longer dependent on his parents for decisions. 2.这个地区有大量肉类供应,但新鲜果蔬奇缺。 There are abundant supplies of meat in this region, but fresh fruit and vegetables are scarce. 3.工程师们依靠工人们的智慧,发明了一种新的生产方法,使生产率得以提高。 Drawing on the wisdom of the workers, the engineers invented a new production method that led to increased productivity. 4.他花了许多时间准备数学考试,因此当他获知自己只得了个B时感到有点失望。 He spent a lot of time preparing for his math exam. Hence he was somewhat disappointed to learn that he got only a B. 5.我们有充裕的时间从从容容吃顿午饭。

大学物理课后习题标准答案第六章

大学物理课后习题答案第六章

————————————————————————————————作者:————————————————————————————————日期:

第6章 真空中的静电场 习题及答案 1. 电荷为q +和q 2-的两个点电荷分别置于1=x m 和1-=x m 处。一试验电荷置于x 轴上何处,它受到的合力等于零? 解:根据两个点电荷对试验电荷的库仑力的大小及方向可以断定,只有试验电荷0q 位于点电荷q +的右侧,它受到的合力才可能为0,所以 2 00 200)1(π4)1(π42-=+x qq x qq εε 故 223+=x 2. 电量都是q 的三个点电荷,分别放在正三角形的三个顶点。试问:(1)在这三角形的中心放一个什么样的电荷,就可以使这四个电荷都达到平衡(即每个电荷受其他三个电荷的库仑力之和都为零)?(2)这种平衡与三角形的边长有无关系? 解:(1) 以A 处点电荷为研究对象,由力平衡知,q '为负电荷,所以 2 220)3 3(π4130cos π412a q q a q '=?εε 故 q q 3 3- =' (2)与三角形边长无关。 3. 如图所示,半径为R 、电荷线密度为1λ的一个均匀带电圆环,在其轴线上放一长为 l 、电荷线密度为2λ的均匀带电直线段,该线段的一端处于圆环中心处。求该直线段受到的 电场力。 解:先求均匀带电圆环在其轴线上产生的场强。在带电圆环上取dl dq 1λ=,dq 在带电圆环轴线上x 处产生的场强大小为 ) (4220R x dq dE += πε 根据电荷分布的对称性知,0==z y E E 2 3220)(41 cos R x xdq dE dE x += =πεθ R O λ1 λ2 l x y z

大学英语精读4课后翻译

大学英语精读4课后答案 Unit1翻译 1) 我们接到通知,财政部长将于次日接见我们。 We were informed that the Minister of Finance was to give us an audience /receive us the next day. 2) 我觉得很奇怪,他似乎不记得自己的生日。 I thought it odd that he didn't seem to remember his own birthday. 3) 学期论文最迟应在下星期二交来,可是至今大部分学生却几无进展。 Next Tuesday is the deadline for handing in the term papers, but most students have hardly made a dent in the work so far. 4) 看到学生人数不断减少,校长心里很难受。(pain) It pained the headmaster to find the number of students shrinking. 5) 在那个国家一般用现金付账,但支票变得普遍起来了,不久会代替现金作为人们结账的一种方式。 Cash is commonly used in paying bills in that country, but checks are becoming more popular and will, in a short while, replace cash as a way for people to settle their accounts. 6) 该公司声称,这条河流的污染不是它造成的。 The company claims that it is not responsible for the pollution in the river. Unit2翻译 1) 比尔已是个成熟的小伙子,不再依赖父母替他做主。 Bill is a mature young man who is no longer dependent on his parents for decisions. 2) 这个地区有大量肉类供应,但新鲜果蔬奇缺。

大学物理(上)课后习题标准答案

大学物理(上)课后习题答案

————————————————————————————————作者:————————————————————————————————日期: 2

3 第1章 质点运动学 P21 1.8 一质点在xOy 平面上运动,运动方程为:x =3t +5, y = 2 1t 2 +3t -4. 式中t 以 s 计,x ,y 以m 计。⑴以时间t 为变量,写出质点位置矢量的表示式;⑵求出t =1 s 时刻和t =2s 时刻的位置矢量,计算这1秒内质点的位移;⑶ 计算t =0 s 时刻到t =4s 时刻内的平均速度;⑷求出质点速度矢量表示式,计算t =4 s 时质点的速度;(5)计算t =0s 到t =4s 内质点的平均加速度;(6)求出质点加速度矢量的表示式,计算t =4s 时质点的加速度(请把位置矢量、位移、平均速度、瞬时速度、平均加速度、瞬时加速度都表示成直角坐标系中的矢量式)。 解:(1)j t t i t r )432 1()53(2 m ⑵ 1 t s,2 t s 时,j i r 5.081 m ;2114r i j v v v m ∴ 213 4.5r r r i j v v v v v m ⑶0t s 时,054r i j v v v ;4t s 时,41716r i j v v v ∴ 140122035m s 404r r r i j i j t v v v v v v v v v ⑷ 1 d 3(3)m s d r i t j t v v v v v ,则:437i j v v v v 1s m (5) 0t s 时,033i j v v v v ;4t s 时,437i j v v v v 24041 m s 44 j a j t v v v v v v v v v (6) 2d 1 m s d a j t v v v v 这说明该点只有y 方向的加速度,且为恒量。 1.9 质点沿x 轴运动,其加速度和位置的关系为2 26a x ,a 的单位为m/s 2, x 的单位为m 。质点在x =0处,速度为10m/s,试求质点在任何坐标处的速度值。 解:由d d d d d d d d x a t x t x v v v v 得:2 d d (26)d a x x x v v 两边积分 210 d (26)d x x x v v v 得:2322250x x v ∴ 31225 m s x x v 1.11 一质点沿半径为1 m 的圆周运动,运动方程为 =2+33t ,式中 以弧度计,t 以秒计,求:⑴ t =2 s 时,质点的切向和法向加速度;⑵当加速度 的方向和半径成45°角时,其角位移是多少? 解: t t t t 18d d ,9d d 2 ⑴ s 2 t 时,2 s m 362181 R a 2 222s m 1296)29(1 R a n ⑵ 当加速度方向与半径成ο45角时,有:tan 451n a a 即: R R 2 ,亦即t t 18)9(2 2 ,解得:9 2 3 t 则角位移为:32 2323 2.67rad 9 t 1.13 一质点在半径为0.4m 的圆形轨道上自静止开始作匀角加速度转动,其角加速度为 =0.2 rad/s 2,求t =2s 时边缘上各点的速度、法向加速度、切向加速度和合加速度。 解:s 2 t 时,4.02 2.0 t 1s rad 则0.40.40.16R v 1s m 064.0)4.0(4.022 R a n 2 s m 0.40.20.08a R 2 s m 22222s m 102.0)08.0()064.0( a a a n 与切向夹角arctan()0.0640.0843n a a

大学英语课后习题

大学英语课后习题 Last revision date: 13 December 2020.

U n i t1 1. The essayist’s language expresses rich and subtle meanings. 2. The stockbrokers were overtaken by the sharp drop in the stock market last Tuesday. 3. Biologists have estimated that there are around one million animal and plant species living and growing in the rainforests. 4. In the United States the cost of living has been steadily rising in the past few decades 5. The quickly growing company has ambitious plans to expand beyond nation boundarie 6. That computer store is having a sale of audio software; let’s go and have a look. 7. To be safe, you may put on your dark glasses to avoid the sun shining into directly your eyes. 8. When the kitchen is finished, I’m going to focus my attention on the garden shed. 9. In a serious tone of voice, the doctor warned him to keep off sugar. 10. She Cupped her hands around the mug of hot coffee to warm them. 1. I didn’t expect you to be so efficient at that rate; the task will be finished ahead of schedule. 2. For the sake of safety, you must keep all medicines away from children. 3. When we come to know these new employees better, we will assign more suitable tasks to each of them.

相关文档
相关文档 最新文档