A.latent heat of fusion
B.latent heat of vaporization
C.specific heat of vaporization
D.latent heat of the gas
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A.open-type
B.hermetic
C.A and B
D.None of the above
A.compressor
B.condenser
C.throttle valve
D.evaporator
A.lower；higher
B.shallower；deeper
C.larger；smaller
D.higher；lower
A.evaporation
B.frosting
C.condensing
D.compressing
A.rise
B.fall
C.be maintained constant
D.None of the above
最新試題
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
Which of the listed pumps is NOT a positive displacement pump?（）
The usual symptoms of cavitation in a centrifugal pump is （）.
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If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
A salinity indicator is used to determine the （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
One cause of high head pressure occurring in a refrigeration system can be （）.