A.extracts
B.releases
C.gives no
D.absorbs no
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A.vapor
B.liquid
C.solid
D.None of the above is tree
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
最新試題
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
A grease gun is generally used to lubricate a （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
A pressure drop through the refrigerant liquid line may cause （）.
Thermostatic expansion valves can be adjusted for （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）