A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone
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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
最新試題
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
Fire and abandon ship stations and duties may be found on the（）.
Fusible-link fire dampers are operated by（）.
Fire hose couplings（）.
Fire alarm system thermostats are actuated by（）.
High-velocity fog（）.
Foam extinguishes a fire by（）.
Flame screens are used to（）.
Halon extinguishes fire primarily by（）.