A.flash point
B.upper explosive limit
C.lower explosive limit
D.fire point
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A.cooling
B.smothering
C.chemical action
D.All of the above
A.a tug comes alongside while the tanker is loading grade D and E cargoes
B.a large，fresh oil spill is discovered immediately adjacent to the side of the tanker
C.there is an electrical storm in the vicinity
D.there is a fire on the dock or on a nearby vessel
A.fixed foam systems to be ineffective
B.faster cooling of the fire
C.the accumulation of explosive gases
D.the fire to spread through the ventilation system
A.secure the engine room ventilation
B.secure the machinery in the engine room
C.evacuate all engine room personnel
D.All of the above
A.immediately above the level of the oil
B.at the top of the tank
C.in the vent riser
D.one meter from the deck
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Before using a fixed CO2 system to fight an engine room fire，you must（）.
A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）.
A fire must be ventilated（）.
Each hose in the fuel transfer system for helicopter refueling must meet the standards of the（）.
Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.
Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
Cargo transfer operations on a tanker need NOT be stopped when（）.
A fire starting by spontaneous combustion can be expected in which condition?（）.
Each hand portable fire extinguisher must be marked with（）.