A.vapor
B.liquid
C.solid
D.None of the above is tree
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A.above
B.below
C.equal to
D.None of the above
A.filter
B.filter drier
C.heat exchanger
D.air cooler
A.temperature
B.density
C.volume
D.pressure
A.compressor；condenser
B.condenser；evaporator
C.throttle valve；evaporator
D.evaporator；condenser
A.detect the temperature
B.detect the pressure
C.heat the refrigerant
D.accelerate the refrigerant
最新試題
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
A salinity indicator is used to determine the （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
A salinity indicator is used to determine the （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.