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
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
The treatment of the fuel oils involves storage, heating, filtering and（）
The shipboard oil pollution emergency plan will be invalid after （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Using a file without a handle may result in （）
If separating effect is not good, which measure should be taken （）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The cetane rating of diesel fuel is an indication of the （）