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问题 选择题

—How long have you _____ the bike.

—For about two weeks.[ ]

A. bought  

B. buy

C. buyed    

D. had

答案

答案：D

单项选择题

判断电压互感器、耦合电容器高频局部放电检测正常的标准为与标准图谱比较（）。

A.无典型放电图谱

B.在同等条件下同类设备检测的图谱有明显区别

C.具有典型局部放电的检测图谱

D.低于背景噪声
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填空题

The word "sport" first meant something that people did in their (36) time. Later it often meant (37) wild animals and birds. About a hundred years ago the word was first used for (38) games, which is its usual (39) today. People spend their spare time playing football, basketball, tennis and many other sports. Such people play because they want to. Some people are (40) for the sport they play. These people are called (41) sportsmen. They may be sportsmen for only a few years, but many of them can earn a lot of money. Of course, it is only (42) for a few sportsmen to earn much money in sports for (43) , like golf, tennis and (44) racing. (45) . They allow the companies to use their names or photographs and are paid for this. (46)

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