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單項(xiàng)選擇題

Some of the energy fed into the pump will be dissipated as （） due to mechanical inefficiencies, the remainder will be converted into pressure rise and fluid velocity.

A.hydraulic head
B.static head
C.heat energy
D.steam

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單項(xiàng)選擇題

Every liquid has a pressure at which it will vaporize and this pressure varies with temperatureThe word “which” means （）.

A.a liquid
B.a pressure
C.a temperature
D.none of the above

單項(xiàng)選擇題

A simple pumping system consists of a suction branch, a pump and （）.

A.a priming device
B.a discharge branch
C.a filter
D.a suction valve

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