A.Electricity
B.Chain reaction
C.Pressure
D.Smoke
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A.The rated capacity in gallons，quarts，or pounds
B.The hydrostatic test date of the cylinder
C.The name of the item
D.An identifying mark of the actual manufacturer
A.Effective even if ventilation is not shut down
B.Will not deteriorate in storage
C.Non-corrosive
D.Effective on electrical equipment
A.Slow down the spread of fire by cooling adjacent structures
B.Cover the fire with foam
C.Smother the fire with a blanket or similar object
D.Break up solid objects to ensure that any deep seated fires are extinguished
A.Automatic sprinkler system
B.Steam smothering system
C.Dry chemical system
D.Carbon dioxide system
A.It is effective in controlling fire in flowing oil such as coming from a broken fuel line
B.It absorbs heat from materials that could cause reignition
C.Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment
D.Once the surface is blanketed with foam and the fire is extinguished，no further foam is required
最新試題
To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.
What is NOT a characteristic of carbon dioxide fire-extinguishing agents?（）
What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）
To determine if a CO2 fire extinguisher is fully charged，you would（）.
What does the term head mean when applied to a fire pump?（）
Water fog from an all-purpose nozzle may be used to（）.
There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.
The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.
The spread of fire is NOT prevented by（）.
What is best suited for fighting a fire in a ballast control room?（）