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
The shipboard oil pollution emergency plan will be invalid after （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Under MARPOL Code the ship to which it applies has to carry （）
The condensers located in various stages of a flash evaporator are cooled by（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Which of the following items don’t belong to dock repair works?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.