单项选择题

The heat identified by only a change in temperature is known as （）.

A.sensible heat
B.latent heat
C.total heat
D.residual heat

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单项选择题

The static suction lift of a pump is the difference in elevation between the （）.

A.centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump
B.centerline of the pump and the suction liquid level when the source of liquid is above the pump
C.centerline of the pump and the level of the discharge liquid
D.liquid levels of the suction and discharge

单项选择题

The sum of the sensible heat and the latent heat of any substance is known as （）.

A.total heat
B.residual heat
C.specific heat
D.superheat

单项选择题

With respect to centrifugal pump impellers, which of the following descriptions represents the correct centrifugal pump classification? （）

A.Single stage or multistage
B.High pressure or low pressure
C.Open or close coupled
D.Horizontal or vertical