A.compressed air
B.hydraulic oil
C.electricity
D.All of the above
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A.Alarm
B.Monitoring
C.Auto start-up
D.None of the above
A.make-up
B.desired value
C.deviation
D.set value
A.the bridge officer on watch
B.the chief engineer
C.the duty engineer
D.the duty motorman
A.open
B.open front type
C.live front type
D.None of the above
A.alternator
B.glass thermometer
C.burdon tube
D.piezoelectric pressure transducer
最新試題
“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（）
The condensers located in various stages of a flash evaporator are cooled by（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The shipboard oil pollution emergency plan will be invalid after （）
The main purpose of port State control is not to（）
（） is not installed on the main switchboar.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）