A.temperature
B.density
C.volume
D.pressure
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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
A.superheat of the gas leaving the compressor
B.back pressure in the evaporator
C.temperature of the icebox
D.superheat of the gas leaving the evaporator
A.either all the way open or all the way closed
B.normally fully open
C.throttled depending on load
D.controlled by liquefied pressure
A.dry
B.wet
C.super-cooled
D.superheated
最新試題
The output volume of a positive fixed displacement pump can be changed only by （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
A grease gun is generally used to lubricate a （）.
The major source of chemical contaminants in hydraulic fluid is （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
A salinity indicator is used to determine the （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
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 （）.