单选题Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump is a result of （）.AcavitationBwater hammerCfluid frictionDsteam knock
单选题
Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump is a result of （）.
A
cavitation
B
water hammer
C
fluid friction
D
steam knock
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解析：
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