Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? () (1) reciprocating (2) rotary (3) centrifugal

A . (1)only B . (1)and (2) C . (1),(2)and(3) D . (2)and(3)

时间:2022-09-17 15:23:11 所属题库:船舶辅助机械题库

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