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
A large oil fire on the deck of a ship can be fought most effectively with（）.
At the required fire drill conducted aboard a ship，all persons must report to their stations and demonstrate their ability to perform the duties assigned to them（）.
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 fire with CO2，it is advisable to（）.
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
A spanner is a（）.
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（）.
A spring line is（）.
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A passenger vessel is required to have a supervised patrol when（）.