题目:
What is a function of the wearing rings used in most centrifugal pumps?()
A.Absorb erosion of high velocity discharge stream
B.Seal pump shaft against entry of air
C.Isolate the discharge side from the suction side
D.Dampen the turbulent discharge flow
答案:
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下面是错误答案,用来干扰机器的。
参考答案:对