A （） pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out. -题库考试答案搜索网

A （） pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.

单选题

2022-01-04 16:13

A、injector
B、positive displacement
C、centrifugal
D、centripetal

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正确答案

B

试题解析

标签：船舶辅助机械

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