A.mechanical foam
B.chemical foam
C.carbon dioxide
D.soda acid
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A.Dry chemical
B.Halon
C.Low velocity fog
D.Steam
A.abandon ship
B.dismissal from drills
C.fire and emergency
D.lower lifeboats
A.6 short blasts and 1 long blast
B.long blast mare than 6 short blasts
C.more than 6 short blasts and 1 long blast
D.1 long blast of at least 10 seconds
A.remain in the vicinity of the vessel
B.head for the closest land
C.head for the closest sea-lanes
D.get a majority opinion
A.thirsty
B.sick or injured
C.wet
D.awake
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（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Cold weather starting of a diesel engine may be made easier by（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The cetane rating of diesel fuel is an indication of the （）
The treatment of the fuel oils involves storage, heating, filtering and（）
To proceed to the assistance of a ship in distress is（）
Using a file without a handle may result in （）
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