A.one year
B.two years
C.four years
D.five years
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A.Ring type
B.Fork type
C.Spade type
D.Push on pull off type
A.anaerobic bacteria
B.aerobic bacteria
C.air bubbles
D.disinfection chemicals
A.the temperature and flow quantity of the exhaust gas from M.E
B.the quantity of steam demanded
C.the rotary speed and the cooling water temperature of main engine
D.efficiency of M.E turbocharger
A.purge lube oil from the liquid refrigerant
B.recover water purged from the system
C.separate foul gases from the receiver
D.purge non-condensable gases without losing refrigerant
A.Sub-cooled liquid
B.Sub-cooled vapor
C.Superheated vapor
D.Liquid
最新試題
The cetane rating of diesel fuel is an indication of the （）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Cold weather starting of a diesel engine may be made easier by（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
（） is not installed on the main switchboar.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）