水环泵有临界压力比Xcr和极限压力比Xmax,效率最高工况发生在排出压力与吸入压力的压力比()时。A、X=XcrB、X=XmaxC、X<XcrD、Xcr<X<Xmax
水环泵有临界压力比Xcr和极限压力比Xmax,效率最高工况发生在排出压力与吸入压力的压力比()时。
- A、X=Xcr
- B、X=Xmax
- C、X<Xcr
- D、Xcr<X<Xmax
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