A.Spring-centered valve
B.Unloading valve
C.Three-position valve
D.Two-position valve
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A.Expansion valve
B.Condenser
C.Evaporator
D.Compressor
A.The condenser and the expansion valve
B.The king valve and the solenoid valve
C.The compressor and the expansion valve
D.The condenser and the solenoid valve
A.temperature and pressure
B.humidity and temperature
C.pressure and vacuum
D.pressure and humidity
A.capacity of 0%
B.efficiency of 100%
C.internal slippage of 0%
D.shut off horsepower rating of 100%
A.series of baffles
B.crossover pipe
C.condensate separator
D.drain pump
最新試題
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
A salinity indicator is used to determine the （）.
Which of the listed pumps is NOT a positive displacement pump?（）
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
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 （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）