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问题 单项选择题

一台正向旋转的直流并励发电机接在直流电网上运行，若撤掉原动机，则发电机将：

A．(A) 停转

B．(B) 作为电动机反向运行

C．(C) 作为电动机正向运行

D．(D) 不能继续运行

答案

参考答案：C

听力题

根据短文内容及首字母提示，填写所缺单词。

Reading is an activity people enjoy a lot in their free time.

Some like reading newspapers and o__小题1:_ enjoy books. My f_小题2:___ books are those about the lives of great people. Reading them always gives me a lot of ideas on how to make my o__小题3:_ life better.

Great people are famous not because they were handsome or beautiful, but because they did not give up w__小题4:__ their life was difficult. They tried to use e__小题5:__ chance to change their life and to make the world better.

One good example is Orville and Wilbur Wright, the two brothers who invented the airplane. The plane has m_小题6:___ the world into a small village. Hard work, not good luck, was the r__小题7:__ why the Wright Brothers could invent this machine and become great people. Today we will remember them when we see planes f__小题8:__in the sky.

Whenever I read s__小题9:_ about great people, I always learn a lot from them and they encourage me. This is w__小题10:___ I enjoy reading great people's lives.
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判断题

焗的菜式都没有配料。
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