A.above
B.below
C.equal to
D.None of the above
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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
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
最新試題
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
A salinity indicator is used to determine the （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The major source of chemical contaminants in hydraulic fluid is （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
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?（）
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
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 （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.