单选题If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）ACentrifugalBGearCPropellerDTurbine
单选题
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
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