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
您可能感興趣的試卷
你可能感興趣的試題
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
最新試題
Halon extinguishes a fire by().
Fire extinguishing agents used on Class C fires must be().
Halon fire extinguishers are NOT effective when used on which types of fires?()
Control valves of a CO2 system may be located within the protected space when().
Foam extinguishes a fire by().
Except in rare cases,it is impossible to extinguish a shipboard fire by().
Flame screens are used to().
How does foam extinguish an oil fire?().
How is the external flotation bladder of an immersion suit inflated?()
Firefighting foam is only effective when the foam().