候选关键字的属性可以有A．0个 B．1个 C．1个或多个 D．多个

发布时间：2017-05-22 09:04 │ 来源：www.tikuol.com

题型：单项选择题

候选关键字的属性可以有

A．0个

B．1个

C．1个或多个

D．多个

题型：单项选择题

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Bill likes football very much, and he often goes to matches in our 1 on Sundays. He doesn't go to the best seats, 2 they are very 3 . There was a big football match in our town last Sunday. 4 it was very cloudy, but then the sun 5 , and it was very hot. There were a lot of people on benches 6 Bill at the match. Bill was on one bench and there 7 a fat man on a bench behind him. At first the fat man was cold, 8 then he was very hot. He took his coat off and put it in front of him, but it fell on Bill's head. Bill was not angry. He took the coat 9 his head, looked at it and then. laughed and said, "Thank you. but 10 are the trousers?"
( )l. A. village ( )2. A. so ( )3. A. dear ( )4. A. At that time ( )5. A. went down ( )6. A. in front of ( )7. A. was ( )8. A. or ( )9. A. away ( )10.A. how	B. town B. if B. cheap B. Then B. was away B. behind B. had B. but B. from B. when	C. country C. because C. nice C. The first C. came out C. around C. was going to be C. and C. on C. whose	D. home D. but D. high D. At first D. came down D. near D. would be D. so D. off D. where

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题型：单项选择题

如图所示，一小车静止在光滑水平面上，甲、乙两人分别站在左右两侧，整个系统原来静止．则当两人同时相向走动时（　　）

A．要使小车向左运动，甲、乙速率一定大小相等

B．要使小车静止不动，甲、乙动量大小一定大小相等

C．要使小车向左运动，甲的动量大小一定比乙的大

D．要使小车向左运动，乙的动量大小一定比甲的大

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题型：单项选择题

如图所示电路中，电键K₁，K₂，K₃，K₄均闭合，在平行板电容器C的极板间悬浮着一带电油滴P，

（1）若断开K₁，则P将______；

（2）若断开K₂，则P将______；

（3）若断开K₃，则P将______；

（4）若断开K₄，则P将______．

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题型：单项选择题

对于核和放射突发污染事件中应急人员的个人防护应该遵守的基本防护导则包括（）

A.一般要求

B.眼晶体防护

C.甲状腺防护

D.应急人员返回导则

E.骨髓防护

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题型：单项选择题

下列合同中，可以签署口头协议的是______。

A．全日制劳动合同
B．非全日制劳动合同
C．固定期限劳动合同
D．无固定期限劳动合同

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