A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue
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A.flushed with clean refrigerant oil
B.purged with the refrigerant
C.washed with an ammonia and alcohol solution
D.grounded to compressor
A.petroleum crystals
B.phosgene gas
C.water vapor
D.carbon monoxide
A.be clear
B.be blue
C.be light green
D.show bubbles
A.temperature in the space being cooled
B.liquid refrigerant pressure at the solenoid valve
C.pressure drop across the evaporator coils
D.refrigerant gas superheat at the coil outlet
A.act as a pilot from the solenoid valve
B.regulate the amount of refrigerant flow to the coil
C.regulate the water flow
D.turn the compressor off and on
最新試題
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The ISPS Code consists of a mandatory section-Part A, which shows（）
（） is not installed on the main switchboar.
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Diesel engine air start system check valves are opened by （）
The main purpose of port State control is not to（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Using a file without a handle may result in （）
The condensers located in various stages of a flash evaporator are cooled by（）