Positive displacement, helical gear pumps are well suited for pumping oil because -题库考试答案搜索网

Positive displacement, helical gear pumps are well suited for pumping oil because

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2023-03-05 19:42

A、stuffing boxes eliminate the leakage problems usually associated with other gear pumps
B、it is not necessary to closely maintain design clearances with this pump
C、they are essentially self-priming and produce a high suction lift
D、these pumps are designed with extreme tooth angles

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正确答案

C

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