A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity
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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
A.stop ventilation
B.stop the vessel
C.de-energize the circuit
D.apply water to extinguish the fire
A.carbon dioxide
B.Halon 1301
C.dry chemical
D.water fog
A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above
最新試題
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 spring line is（）.
A portable dry chemical fire extinguisher discharges by（）.
An effective method for moving patients with spinal injuries onto a spine board is known as the（）.
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
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（）.
All of the following are part of the fire triangle EXCEPT（）.
A vessel is constructed with a steel hull and an aluminum superstructure. Which statement is TRUE?（）
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
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（）.