【单选题】
当消弧线圈的电感电流大于接地电容电流时,接地处具有多余的电感性电流,这种补偿方式称为___。
A. 欠补偿
B. 过补偿
C. 全补偿
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答案
B
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【单选题】
对于接地电阻测量仪探针位置说法正确的是___。
A. 将电位探针插在离接地体20m的地下,电流探针插在离接地体40m的地下
B. 将电流探针插在离接地体20m的地下,电位探针插在离接地体40m的地下
C. 将电位探针插在离接地体20m的地下,电流探针插在离电位探针40m的地下
【单选题】
为了提高供电可靠性、经济性,合理利用动力资源,充分发挥水力发电厂作用,以及减少总装机容量和备用容量,现在都是将各种类型的发电厂、变电所通过___连接成一个系统。
A. 用电线路
B. 输配电线路
C. 发电线路
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25. _______ are you going to the School Uniform Exhibition, Amy ?
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( ) 26. Where does the writer of "The little Prince" come from?
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A. A
B. B
C. C
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【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
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【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
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( ) 29. What is the writer's main purpose（目的）in writing this passage？
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D． To let people know how poor he was．
A. A
B. B
C. C
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( ) 30. Why did the father not ask his son not to do this and do that？
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B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
A. A
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C. C
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( ) 31. What would someone learn from this passage？
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A. A
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( ) 32. What may be the proper Chinese for the underlined part in the passage？
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A. A
B. B
C. C
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( ) 33. Why did Natalie Smith pay for the six cars behind her?
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【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
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( ) 36. What can we infer from the last paragraph?
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A. A
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( ) 37.The greatest river for navigation is ___________.
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【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
A. A
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D. D
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
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A. A
B. B
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【单选题】
( ) 40. The best title of the passage is ___________.
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