A.air
B.moisture
C.cooling water
D.lubricant
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A.drained off
B.collected
C.sent to the crankcases
D.separated with oil
A.rotary compressors
B.reciprocating compressors
C.centrifugal compressors
D.screw compressors
A.starting diesel engines
B.pneumatic control systems
C.pneumatic tools
D.supercharging air
A.globe valves
B.butterfly valves
C.gate valves
D.reducing valves
A.a sewage treatment plant
B.the extended aeration process
C.the liquor
D.the bubbling air
最新試題
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
If separating effect is not good, which measure should be taken （）
（） is not installed on the main switchboar.
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）