A.Fire ax
B.Flashlight
C.rigid helmet
D.Fresh air breathing apparatus
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A.Conducts electricity
B.Difficult to store
C.Large volume necessary to be effective
D.Ineffective in powdered metal fires
A.Bouncing a straight stream of water off the overhead to create spray effect
B.Spraying foam on a bulkhead and letting it flow down and over a pool of burning oil
C.Flooding a paint locker with CO2 and sealing the compartment
D.Cooling adjacent bulkheads with water to prevent the spread of the fire by conduction
A.Water
B.Foam
C.Dry chemical
D.Carbon Dioxide
A.Water foam
B.Dry chemical powder
C.Water fog
D.Alcohol foam
A.Manual fire detection system
B.Automatic fire detection system
C.Smoke detection system
D.Watchman's supervisory system
最新試題
When should a fire be ventilated?（）
Which extinguishing agent is best for use on a magnesium fire?（）
Which portable fire extinguisher should be used on a class C fire on board a vessel?（）
When joining the female coupling of the fire hose to the male outlet of the hydrant，you should make sure that the（）.
When two fire hose teams are attacking a fire they should（）.
Which fire detection system is actuated by sensing a heat rise in a compartment?（）
When using carbon dioxide to fight a fire on a bulkhead，the CO2 should be applied（）.
Which extinguishing agent is most effective on a mattress fire?（）
When must a dry chemical fire extinguisher be recharged?（）
When water is used to fight a fire on board a ship，the effect of the weight of the water must be taken into account. How much sea water will increase the weight displacement by one ton?（）