A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
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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
A.able to absorb heat
B.water based
C.nonconducting
D.nontoxic
A.used for electrical fires only
B.the smallest
C.the most accessible
D.the most effective
A.portable
B.semi-portable
C.fixed
D.disposable
A.crewman's duty list
B.Certificate of Inspection
C.shipping articles
D.muster list
A.smoke sensors
B.the difference in thermal expansion of two dissimilar metals
C.pressure loss due to air being heated
D.an electric eye which actuates when smoke interferes with the beam
A.removing the heat
B.removing the oxygen
C.removing the fuel
D.interrupting the chain reaction
最新试题
Halon extinguishes fire primarily by（）.
Fire may be spread by which means?（）.
Foam extinguishes a fire by（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Fire hose couplings（）.
How does foam extinguish an oil fire?（）.
Fire alarm system thermostats are actuated by（）.
Halon extinguishes a fire by（）.
Flame screens are used to（）.
Fire extinguishers of sizes III，IV，and V are designated as（）.