A.the lack of cooling effect on heated materials
B.that it cannot be used in a dead ship situation with no electrical power to the CO2 pump
C.that it breaks down under extreme heat to form poisonous gases
D.there is no effect on a class A fire even in an enclosed space
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A.pump from the damaged tank
B.fight a fire
C.abandon the rig
D.use the crossover system
A.A fusible link will automatically open after a fire is extinguished and reset the damper
B.Fusible links must be replaced at every inspection for certification
C.Fusible links are tested by applying a source of heat to them
D.Fusible links must be replaced if a damper is activated
A.foam or soda acid
B.dry chemical or foam
C.carbon dioxide or dry chemical
D.carbon dioxide or foam
A.all the spaces of a vessel
B.all cargo spaces
C.the engine room and largest cargo space
D.the space requiring the largest amount
A.size of the fire when initially observed
B.complete containment of the fire
C.cooling ability of the firefighting agent
D.class of the fire
最新試題
Weight is considered during the periodic required inspection and servicing of（）.
To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.
The sprinkler system of a survival craft is used to（）.
There is a fire aft aboard your vessel. To help fight the fire，you should（）.
There is a fire in the crew’s quarters of your vessel. You should（）.
The type of extinguisher which should be used for an electricity fire is（）.
The spread of fire is prevented by（）.
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.
What are the most important reasons for using water fog to fight fires?（）
Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）