A.ultra much space
B.universal medium system
C.unit machined space
D.unattended machinery space
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A.the engine crankcase
B.the engine scavenge boxes
C.drain tanks
D.fuel tanks
A.regulate the fuel supply
B.maintain a constant fuel viscosity at the fuel valves
C.maintain efficient cooling
D.alter the fuel density
A.pressure
B.temperature
C.volume
D.specific gravity
A."vacuum"
B."the excess of pressure above atmosphere"
C."figure on a gauge"
D.Any of the above
A.flowmeter
B.viscometer
C.micrometer
D.feeler
最新試題
Under MARPOL Code the ship to which it applies has to carry （）
Using a file without a handle may result in （）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Cold weather starting of a diesel engine may be made easier by（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Which of the following items don’t belong to dock repair works?（）