单选题改变往复泵的流量可以用改变()开度的方法。A吸入阀B排出阀C回流阀DA或B或C
单选题
改变往复泵的流量可以用改变()开度的方法。
A
吸入阀
B
排出阀
C
回流阀
D
A或B或C
参考解析
解析:
暂无解析
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