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【Daily Question】Theoretical Foundation 2019.7.16

2019-07-16View Original

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Multiple-choice question: Among the following fluid transfer machinery, which one is suitable for regulating flow rate by changing the opening degree of the outlet valve? (  )   A. Gear pump B. Vortex pump C. Centrifugal pump D. Reciprocating pump Answer: C Hint: The answer is visible upon reply

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