A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class 'B' fires
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A.electricity
B.fuel
C.oxygen
D.heat
A.opened and burned material removed
B.left closed with vents off until all boundaries are cool
C.checked for oxygen content
D.doused with water to prevent reflash
A.use all CO2 available to cool the surrounding area
B.stand by with water or other agents
C.thoroughly ventilate the space of CO2
D.jettison all burning materials
A.Electrical cut off switch
B.A fusible link
C.Manual cut off switch
D.A water spray actuator
A.The aluminum will provide greater resistance to the spread of fire by conduction
B.The aluminum structure is usually attached to a steel coaming by a method that insulates the two metals
C.If the superstructure is stressed，an aluminum structure requires additional expansion joints to prevent fracture
D.The steel at the area of the aluminum-to-steel connection must be closely checked for galvanic corrosion
最新試題
As compared to carbon dioxide，dry chemical has which advantage?（）.
After extinguishing a fire with CO2，it is advisable to（）.
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
An engine compartment gasoline fire requires which type of extinguisher?（）.
An aircraft has indicated that he wants you to change course and follow him. You cannot comply because of an emergency on board. Which signal should you make?（）
An inert gas system is designed to reduce the possibility of tank explosions by（）.
A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.
An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.
A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.
A large oil fire on the deck of a ship can be fought most effectively with（）.