单选题同一台离心泵转速n改变范围不太大时()。A其工作流量Q、扬程H及轴功率P皆与n成正比地变化B其相似工况流量Qc、扬程Hc、轴功率Pc与n成正比地变化CQ、H、P分别与n、n2、n3成正比地变化DQc、Hc、Pc分别与n、n2、n3成正比地变化
单选题
同一台离心泵转速n改变范围不太大时()。
A
其工作流量Q、扬程H及轴功率P皆与n成正比地变化
B
其相似工况流量Qc、扬程Hc、轴功率Pc与n成正比地变化
C
Q、H、P分别与n、n2、n3成正比地变化
D
Qc、Hc、Pc分别与n、n2、n3成正比地变化
参考解析
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