問題詳情
24. Which possible reason will not make centrifugal pumps to failure to deliver water?
(A) The motor may be sufficient speed
(B) Discharge head is too high
(C) Air leak in the suction line, or broken or plugged up impeller
(D) Direction of rotation of the impeller is wrong
參考答案
答案：A
難度：非常簡單1
統計：A(2),B(0),C(0),D(0),E(0)