A.is effective if used promptly on an oil fireB.has a g……

单项选择题When two fire hose teams are attacking a fire they should（）.

A.use different fire hose pressures
B.use fire hoses of different sizes
C.not attack the fire from opposite sides
D.not wear protective clothing

单项选择题When towing astern what equipment should be stowed ready for use near the towline?（）

A.First aid kit
B.Axe or cutting torch
C.Fire extinguisher
D.Chafing gear

单项选择题When should a fire be ventilated?（）

A.When attacking the fire directly
B.When using a steam smothering system
C.When using the fixed CO₂ system
D.All of the above

单项选择题When possible，what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?（）

A.Blanket the cargo spill with foam
B.Prevent the spread of fire with a foam dam
C.Apply CO₂ on burning fuel at its source
D.Shut off the transfer of cargo

单项选择题When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）

A.Secure all engine room doors，hatches，and vents
B.Close the fuel line valve
C.Check the spread of the fire with foam
D.Cast the barge off the wharf