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【简答题】
Many people believe that 3G mobile phones will be used in almost all everyday activities. It____that we won’t go shopping because most things will be available(可得到的) on the Internet. There will be no more____ because all texts will be available in electronic libraries. The Internet will be used to plan holidays, rent films and_____ food. Most telephone calls will be ____ by 3G mobile phones as well. Some people are ____ about the new development. Others, however, don’t think that 3G mobile phones will replace the old __ of shopping and communicating. Let’s look at books, for example. Some people believe that one day we won’t read books made of paper. ____, we’ll read books by using 3G mobile phones. These mobile phones will store the contents(内容)of many different books at the same time. We won’t need to turn lots of pages and paper will be ____. Is the Internet shopping as fun as traditional shopping? Many people say it’s not. It’s _ _ _ to go into shops and look at things. It’s also__ _ that most people will want to read books on their 3G mobile phones. Maybe 3G mobile phones won’t change these two habits. 小题1: A.is thinking B.has thought C.is thought D.to think 小题2: A.dictionaries B.people C.letter D.books 小题3: A.order B.heat C.eat D.cook 小题4: A.built B.made C.bought D.used 小题5: A.afraid B.interested C.worried D.excited 小题6: A.ways B.time C.places D.houses 小题7: A.Besides B.However C.Instead D.So 小题8: A.sold B.saved C.wasted D.collected 小题9: A.boring B.interested C.terrible D.fun 小题10: A.important B.comfortable C.impossible D.normal
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【判断题】橡塑绝缘类电力电缆,不包含交联聚乙烯绝缘电力电缆。( )
A.
正确
B.
错误
【单选题】Personally, I encourage people to do extreme sports because it is citizens’ elementary right to opt for their favorite sports. Attempts should be made to ensure these dangerous sports are thrilling an...
A.
a summary and final thought, a recommendation
B.
a summary and final thought, quotation
C.
a recommendation, a summary and final thought
D.
a summary and final thought, quotation
【单选题】在下列材料中,( )不能作为滑动轴承轴瓦或轴承衬的材料。
A.
ZSnSb11Cu6
B.
Ht200
C.
GCrl5
D.
CuPb30
【简答题】在同一平面内有两条互相垂直的导线【图片】和【图片】,【图片】为无限长直导线,【图片】为长2a的直导线,二者相对位置如图所示.若【图片】和【图片】同时通以电流I=2A,那么【图片】受到【图片】的安培力大小为 【图片】N. (【图片】,计算结果取两位有效数字。)【图片】
【单选题】若【图片】和【图片】都是单位向量,那么【图片】是单位向量吗?
A.
只有当 时, 是单位向量
B.
无论夹角如何, 总是是单位向量
C.
当 或 时, 是单位向量
D.
只有当 时, 是单位向量
【判断题】设样本【图片】来自总体【图片】,样本均值和样本方差为【图片】。若【图片】是【图片】的无偏估计量,那么【图片】
A.
正确
B.
错误
【判断题】若【图片】和【图片】,那么【图片】。
A.
正确
B.
错误
【单选题】下列各材料中,不能作为滑动轴承轴瓦或轴承衬使用的是( )。
A.
ZCuPb30
B.
ZSnSbllCu6
C.
GCr15
D.
HT200
【单选题】下列材料中,不能用来作为滑动轴承轴瓦或轴承衬的材料是( )。
A.
GCr15
B.
HT200
C.
ZCuPb30
D.
ZSnSb11Cu6
【简答题】Nowadays more and more young athletes are taking part in the risky activities called “extreme sports” or “X-sports”. In the past young athletes would play baseball. Today, they want risk and excitemen...
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