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If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）
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If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）
A、Centrifugal
B、Gear
C、Propeller
D、Turbine
时间：2022-01-03 08:00
关键词：
船舶辅助机械
答案解析
B
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