A.compressor；condenser
B.condenser；evaporator
C.throttle valve；evaporator
D.evaporator；condenser
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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
A.compressor
B.cooling coils
C.condenser
D.receiver
最新試題
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Low compressor head pressure in a refrigeration system can be caused by（）.
The major source of chemical contaminants in hydraulic fluid is （）.
Thermostatic expansion valves can be adjusted for （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
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 amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
A pressure drop through the refrigerant liquid line may cause （）.
The general purpose of a heat exchanger is to （）.