单项选择题
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
When possible，what should be the FIRST step in combatin...
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
When possible，what is the FIRST step in fighting an eng...
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
When must a dry chemical fire extinguisher be recharged...
单项选择题When must a dry chemical fire extinguisher be recharged?（）
A.After each use B.When the air temperature exceeds 90°F C.Every 6 months D.Every 12 months
