A.concentrations of explosive gas
B.an oxygen deficiency in a space
C.the presence of harmful amounts of carbon monoxide
D.All of the above
您可能感興趣的試卷
你可能感興趣的試題
A.sludge
B.oily ballast water
C.bilge slops
D.All of the above
A.fuel oil only
B.crude oil only
C.liquefied petroleum gas
D.petroleum oil of any kind
A.Engine room ventilation should be started
B.Main engines should be secured
C.The fire pump should be started
D.The fixed CO2 system should be activated
A.proceed to their man overboard stations
B.start the fire pump
C.put on lifejackets and go to their abandon ship stations
D.secure the propulsion diesel engines and evacuate the engine room
A.The fire pump should be started
B.The boiler rims should be secured
C.The fixed CO2 system should be initiated into action
D.The engine room ventilation should be secured
最新試題
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The treatment of the fuel oils involves storage, heating, filtering and（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The condensers located in various stages of a flash evaporator are cooled by（）
The shipboard oil pollution emergency plan will be invalid after （）
To proceed to the assistance of a ship in distress is（）
If separating effect is not good, which measure should be taken （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Using a file without a handle may result in （）