出自:专升本

高速重载齿轮传动中,当散热条件不良时,齿轮的主要失效形式是()。
A:轮齿疲劳折断
B:齿面点蚀
C:齿面磨损
D:齿面胶合
E:齿面塑性变形
我国民族问题的实质是()。
A:阶级斗争
B:根本利益一致基础上的事实上的不平等
C:民族矛盾
D:经济文化的差异
轴承的基本额定动载荷是指轴承的()恰好为()时,轴承所能承受的载荷值。
带传动是依靠()来传递运动和功率的。
A:带与带轮接触面之间的正压力
B:带与带轮接触面之间的摩擦力
C:带的紧边拉力
D:带的松边拉力
()they are doing has never been done before.
A:That
B:What
C:Why
D:Whether
外力撤消后构件上能完全消失的变形称为(),不能完全消失而残留的永久变形称为()。
The number of speakers of English in Shakespeare’s time is estimated (估计) to have been about five million. Today it is estimated that some 260 million people speak it as a native language, mainly in the United States, Canada, Great Britain, Ireland, South Africa, Australia and New Zealand. In addition to the standard varieties of English found in these areas, there are a great many regional and social varieties of the language as well as various levels of usage that are employed both in its spoken and written forms.
In fact, it is impossible to estimate the number of people in the world who have acquired an adequate (足够的) working knowledge of English in addition to their own languages. The purpose for English learning and the situations in which such learning takes place are so varied that it is difficult to explain and still more difficult to judge what forms an adequate working knowledge for each situation.
The main reason for the widespread demand for English is its present-day importance as a world language. Besides serving the indefinite needs of its native speakers, English is a language in which some of important works in science, technology, and other fields are being produced, and not always by native speakers. It is widely used for such purposes as meteorological and airport communications, international conferences, and the spread of information over the radio and television networks of many nations. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multilingual populations and need a language for internal communication in such matters as government, commerce, industry, law and education as well as for international communication and for entrance to the scientific and technological developments in the West.

第1题,共1个问题
(单选题)What forms an adequate working knowledge of English
A:The ability to read a newspaper.
B:It is difficult to judge because it differs for each situation.
C:Being a multilingual.
D:Being a native speaker.
提出“知识就是力量”的作家是()
A:契诃夫
B:莫泊桑
C:高尔基
D:培根
目前Internet一般使用()个人计算机接入网络。
A:电话拨号
B:ADSL
C:LAN
D:以上都不是
资源管理器的"查看"菜单中,改变对象显示方式的命令有()。
A: 大图标
B: 小图标
C: 列表
D: 详细资料
为使两对直齿圆柱齿轮能正确啮合,它们的()和()必须分别相等。
在Windows 7中,关于回收站的描述中,错误的是()。
A:回收站是内存上的一块存储空间
B:回收站中的文件可以通过“文件”菜单下的“还原”恢复到原来的位置
C:回收站中的文件可以通过“Delete”键从回收站中删除
D:回收站所占的空间大小用户无法更改
要把打开的多个工作簿中某个工作簿变成当前工作簿有效的操作有()。
A:单击窗口菜单下列出的相应工作簿名
B:单击平铺的工作簿中的相应工作簿的任一处
C:单击任务栏上的工作簿按钮
D:单击菜单项下列出的相应文件名
"计算机辅助设计"的英文缩写是CAD。
在PowerPoint 97中,新建演示文稿已选定“狂热型”应用设计模板,在文稿中插入一个新幻灯片时,新幻灯片的模板将()
A: 采用默认型设计模板
B: 采用已选定设计模板
C: 随机选择任意设计模板
D: 用户指定另外设计模板
在螺纹联接的结构设计中,通常要采用凸台或凹坑作为螺栓头和螺母的支承面,其目的是使螺栓免受弯曲和减小加工面。
By the end of this year, I()enough money for a holiday
A:will save
B:will be saving
C:will have saved
D:will be saved
视觉感觉和知觉理论有哪些?
所有的公共场所都应完全禁止吸烟。
在机构中采用虚约束的目的是为了改善机构的运动状况和()。
--Would you like something --()?
A:drink
B:to drink
C:drinking
D:for drinking
庄子的养生之道是指()
A:保身(保养身体)
B:求全(保全生命)
C:养亲(奉养父母)
D:尽年(尽天年,不夭折)
带传动主要是依靠()来传递运动和功率的。
A:带和两轮之间的正压力
B:带和两轮接触面之间的摩擦力
C:带的紧边拉力
D:带的初拉力
How is your father today? () thanks.
A:He is over forty 
B:He's a doctor 
C:He's much better
D:He's Brown
在PowerPoint中,幻灯片放映时()。
A:演讲者可以全屏幕方式放映幻灯片
B:可以以窗口方式放映幻灯片
C:可以在无人干预情况下全屏幕方式放映幻灯片
D:以上都正确
计算机网络系统具有丰富的功能,其中最重要的是通信和()
在轮系中惰轮的作用()。
A:改动传动比
B:改变转向
C:改变轮系的空间尺寸
D:增加轮系的效率
下列选项中具有可能性的是()。
A:铁杵磨针
B:以砖磨镜
C:心想事成
D:水中捞月
It seems obvious that you don"t give away your product for free but this is exactly what indie rock group The Crimea did earlier this year. The band"s reasoning goes like this: more people will download the free album than would pay for it. Therefore more people will heat. The Crimea"s music. These people will then pay money for concerts by the band and perhaps buy a T-shirt or other merchandise. If the band play regular concerts to crowds of 200 or 300 people they can make more money than they would from sales of a CD. There will always be some people who want something they can hold in their hands so they will release the CD into the shops too—but making money through sales of their music isn"t the top priority.
The story illustrates the creative thinking going on in the music business in response to dramatic changes over the last few years in the way that people buy music. Sales of music digitally—to computer, phones and MP3 players rose to $2 billion in 2006—an increase of almost 100 percent on the previous year—yet overall record company sales are down. People are simply not buying CDs in record shops in anything like the numbers they used to.
This trend looks set to continue, so the big question for the music industry is whether they can successfully manage the move to being primarily a digital industry without profits falling to unacceptable levels.
There are both positive and negative signs. On the plus side, more and more people are buying music on mobile phones, which allows people to make impulse purchases—they can buy a song as soon as they hear it. Research by the UK mobile operator 3 suggested that 75 percent of 16 to 24-year-olds wanted to buy a track they liked as soon as they heard it. With so much competition for people"s disposable income, a product that you can sell immediately is a big advantage.
The bad news for record companies, however, is the amount of music that is downloaded illegally. Piracy—usually in the form of cheaply copied CD—has long been an issue for the music business but the Internet means music can be copied and distributed freely through file-sharing sites on a large scale than ever before.
It is this situation that leads bands to start giving away their music for free and promises to make the next few years a very interesting time in the music business.

第1题,共1个问题
(单选题)What is true about sales of music over the last year
A:Overall, sales are up last year.
B:Overall, sales are down last year.
C:There is no change compared to previous sales.
D:It is not mentioned in the passage.
如果单元格中的数太大不能显示时,一组()符号显示在单元内。
A: *
B: ?
C: ERROR!
D: #