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问题 单项选择题

补偿导线的绝缘层负极颜色：SC或SR是（），K是（），E是（），T是（）。

A.蓝；绿；白；棕

B.绿；蓝；棕；白

C.棕；蓝；绿；白

D.白；绿；蓝；棕

答案

参考答案：B

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    Did you hear about Zhao Xiaoting? She wasa college student in Wuhan. When she was incollege, she did well in all her subjects. And shewas s   1   to find a good job in big cities. Butin July 2010, she went to Guizhou to teach as av   2   . Her parents were very m   3    at herbecause of this.    

    When she got to a rural v   4   , she foundit was very p   5   .But she felt very l   6 _because people there were very friendly. Thenshe stayed there and taught the kids English, dancing and so on. People there loved her verymuch.    

    Most of the roads in Guizhou are throughthe mountains. Sometimes they were in d    7   while they were walking on the road. On July21th, 2010,  a big stone fell down from themountain and hit Zhao on the head when shewas walking on the road. It made her die.   Her death gave a great i    8   to thecollege students. They made a d    9   to go onteaching in these a   10   and help those poorchildren.

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单项选择题

多级泵基础垫铁总高度为（）mm。

A、10-30

B、30-50

C、50-70

D、70-90
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