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 possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）
Which extinguishing agent is best for use on a magnesium fire?（）
When should a fire be ventilated?（）
Which characteristic of Halon is a disadvantage when it is used as a fire extinguishing medium?（）
When joining the female coupling of the fire hose to the male outlet of the hydrant，you should make sure that the（）.
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?（）
Which extinguishing agent is most effective on a mattress fire?（）
Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）
Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）
Where would you find the FCC authorization for transmitting on your ship’s EPIRB?（）