A.penetrates to the bottom of the fire
B.is kept saturated with low-velocity water fog
C.mixes with the burning fuel oil
D.completely covers the top of the burning liquid
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A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
A.closing the compartment except for the ventilators
B.completely closing the compartment
C.leaving the compartment open to the air
D.increasing the air flow to the compartment by blowers
A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone
A.are made of bronze，brass，or soft alloy metals
B.should be painted red in order to identify hose lengths
C.are specially hardened to prevent crushing
D.should be greased frequently
A.4Certificate of Inspection
B.Certificate of Seaworthiness
C.Classification Certificate
D.Certificate of Registry
最新試題
Control valves of a CO2 system may be located within the protected space when（）.
Fire may be spread by which means?（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Fire hose couplings（）.
Halon extinguishers used on a class C fire should be directed at the（）.
Foam is a very effective smothering agent and（）.
Fire and abandon ship stations and duties may be found on the（）.
Good housekeeping on a vessel prevents fires by（）.
Fire fighting equipment requirements for a particular vessel may be found on the（）.
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.