A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity
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A.dry bulb temperature
B.wet bulb temperature
C.dew point
D.dry point
A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue
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
最新試題
The treatment of the fuel oils involves storage, heating, filtering and（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Cold weather starting of a diesel engine may be made easier by（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
The cetane rating of diesel fuel is an indication of the （）