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Centrifugal pumps are popular because they are very simple in construction,and produce smooth, constant, （） discharge.
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Centrifugal pumps are popular because they are very simple in construction,and produce smooth, constant, （） discharge.
A、non-pulsating
B、pulsating
C、positive
D、non-positive
时间：2022-01-03 11:27
关键词：
船舶辅助机械
答案解析
A
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