A.Conducts electricity B.Difficult to store C.Large volume necessary to be effective D.Ineffective in powdered metal fires
A.Carbon dioxide B.Water (stored pressure) C.Foam D.Carbon tetrachloride
A.Fire ax B.Flashlight C.rigid helmet D.Fresh air breathing apparatus
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
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
