A.anaerobic bacteria
B.aerobic bacteria
C.air bubbles
D.disinfection chemicals
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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
A.incorrect electrode setting
B.incorrect nozzle position
C.clogged fuel nozzle
D.broken high tension lead
A.decreasing the compression ratio
B.using a special fuel having a high ignition temperature
C.increasing the starting air supply
D.heating the jacket water
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During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Cold weather starting of a diesel engine may be made easier by（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
The cetane rating of diesel fuel is an indication of the （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The ISPS Code consists of a mandatory section-Part A, which shows（）
To proceed to the assistance of a ship in distress is（）