题目内容

水轮机主要是将水流的势能和动能转换为旋转机械能

A. 对
B. 错

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引水渠道可以集中水头

A. 对
B. 错

开关站是电能的输送主要设施之一

A. 对
B. 错

引水隧洞的功能仅仅是输水

A. 对
B. 错

2. What is Churchill’s speech when he was invited to address the patriotic young boys at his old school, Harrow?

A. Never give up
B. We shall never surrender

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