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在对感应式电能表通电后进行误差测定时，转盘转动时有吱吱的响声和抖动现象，问应检查哪些内容？

答案

参考答案：

应检查以下方面：

①检查上轴孔眼是否偏大，导针或轴帽是否松动；

②检查下轴孔眼或宝石是否倾斜；

③钢珠与宝石吻合是否适当；

④圆盘的轴杆是否垂直，蜗杆与计度器蜗轮上是否有毛刺；

⑤蜗杆是否有偏心，蜗杆与上、下轴是否同心。

⑥上、下轴承摩擦是否过大，轴承是否缺油。

完形填空

短文填空(本题共10小题；每小题1分，满分10分)

请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。

Mr. Brown had an umbrella shop in a small town. People sometimes b小题1:him broken umbrellas, and then he took them to a big shop in London. They were r 小题2:there.

One day Mr. Brown went to London by train. He f小题3:to take an umbrella with him that day. Sitting in front of him was a man with an umbrella standing b小题4: the seat. When the train arrived in London, Mr. Brown p小题5:up the umbrella as he often did during his journey by train. Just as he was getting off, he w小题6:  stopped by the man. He said angrily, “That’s 小题7:!” Mr. Brown’s face turned red and he gave it back to the man at once.

When Mr. Brown got to the big shop, the shopkeeper had got his six umbrellas ready. After a good look at e小题8:  of them, he said, “You’ve mended them very well.”

In the afternoon he got into the train again. The s 小题9:  man was in the same seat. He looked at Mr. Brown and his six u  小题10:, “You’ve had a lucky day,” he said.
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单项选择题

10月23日，我国“十一五”期间部署建设首批由高校承建的国家重大科技基础设施之一——华中科技大学脉冲强磁场实验装置通过国家竣工验收，标志着我国拥有了国际顶级水平的脉冲磁场实验装置，成为（）拥有大型脉冲磁场实验装置的国家。

A、第一个

B、第二个

C、第三个

D、第四个
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