A.used for electrical fires only
B.the smallest
C.the most accessible
D.the most effective
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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
A.it is impractical to locate them outside
B.there is also a control valve outside
C.the CO2 cylinders are also in the space
D.an automatic heat-sensing trip is installed
最新試題
Halon extinguishers used on a class C fire should be directed at the（）.
Halon extinguishes fire primarily by（）.
Fusible-link fire dampers are operated by（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Halon extinguishes a fire by（）.
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Fire may be spread by which means?（）.
Fire extinguishers of sizes III，IV，and V are designated as（）.