单选题The basic function of the centrifugal pump impeller is to （）.Adirectly increase the pressure of the liquid being pumpedBdirectly increase the velocity of the liquid being pumpedCconvert the potential energy of the liquid to kinetic energyDseparate air from the liquid being pumped
单选题
The basic function of the centrifugal pump impeller is to （）.
A
directly increase the pressure of the liquid being pumped
B
directly increase the velocity of the liquid being pumped
C
convert the potential energy of the liquid to kinetic energy
D
separate air from the liquid being pumped
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