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净水头是指()。

单选题
2021-12-28 23:32
A、水电站的毛水头与发电水流在输水道内的全部水头损失之差
B、水电站进口断面与尾水出口断面之间的水位差
C、水电站设计水头
D、水电站额定水头
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正确答案
A

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