單項(xiàng)選擇題Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.

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


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1.單項(xiàng)選擇題Fire hose should be washed with（）.

A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone

2.單項(xiàng)選擇題Fire hose couplings（）.

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

3.單項(xiàng)選擇題Fire fighting equipment requirements for a particular vessel may be found on the（）.

A.4Certificate of Inspection
B.Certificate of Seaworthiness
C.Classification Certificate
D.Certificate of Registry

4.單項(xiàng)選擇題Fire extinguishing agents used on Class C fires must be（）.

A.able to absorb heat
B.water based
C.nonconducting
D.nontoxic

5.單項(xiàng)選擇題Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.

A.used for electrical fires only
B.the smallest
C.the most accessible
D.the most effective