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单选题
Which of the following statements about pump operations is NOT a correct statement?（）
A
In order for a fluid to be pumped, a fluid must be made to flow
B
A substance must be cold in order for it to be pumped
C
The kinetic energy imparted by the pump can be used to force a liquid through a hydraulic system
D
A pump must receive its energy from an external source
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更多 “单选题Which of the following statements about pump operations is NOT a correct statement?（）A In order for a fluid to be pumped, a fluid must be made to flowB A substance must be cold in order for it to be pumpedC The kinetic energy imparted by the pump can be used to force a liquid through a hydraulic systemD A pump must receive its energy from an external source” 相关考题
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