A.conducts electricity
B.should be directed at the base of the fire
C.is most effective on burning gases which are flowing
D.extinguishes by cooling oil fires below ignition temperature
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A.meet
B.face
C.be in font of
D.follow
A.meet the applicable standards
B.be marked as additional equipment
C.be stowed in a separate area
D.All of the above
A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity
A.prevent the generation of flammable or combustible gas in tanks
B.blow out cargo lines to prevent gas concentrations
C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit
D.prevent fires in the pumproom by continually displacing flammable vapors
A.eliminating sparks and fire in the vicinity of cargo tanks
B.removing all hydrocarbon gases from the cargo tanks
C.blanketing cargo tanks with inert foam
D.reducing the oxygen concentration below levels necessary for combustion
最新試題
An engine compartment gasoline fire requires which type of extinguisher?（）.
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
After extinguishing a fire with CO2，it is advisable to（）.
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（）.
After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.
As an extinguishing agent，foam（）.
A vessel is constructed with a steel hull and an aluminum superstructure. Which statement is TRUE?（）
All portable fire extinguishers must be capable of being（）.
A galley grease fire on the stove may be extinguished using（）.
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.