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用离心泵把江水送至敞口高位槽，若管路条件不变，而江面下降，则泵的输液量（）

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用离心泵把江水送至敞口高位槽，若管路条件不变，而江面下降，则泵的输液量（）

A.不变

B.增大

C.减小

D.不确定

参考答案:

答案：减小

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