A、A.stop ventilation to the area
B、B.stop the vessel
C、C.secure electricity to the circuit
D、D.apply CO2 to the fire
更多“When fighting an electrical fire, you should first （）.”相关的问题
A、A.fight an electrical fire B、B.fight a magnesium fire C、C.eliminate smoke from a compartment D、D.All of the above
A、is effective if used promptly on an oil fire B、has a greater cooling effect than water C、is lighter than air D、is harmless to cargo and crew
A、A.protect themselves from smoke B、B.obtain the best available air C、C.allow the heat and steam to pass overhead D、D.All of the above
A、A.Whether the fire is in machinery or passenger spaces B、B.Danger of shock to personnel C、C.The amount of toxic fumes created by the extinguisher D、D.Maintaining electrical power
A、A.One man report the fire, and the other two men fight the fire B、B.One man report the fire, one man fight the fire, and one man evacuate and secure the area C、C.One man report the fire, one man fight the fire, and one man act as a safety observer D、D.All three men fight the fire and report it immediately after it is extinguished
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
A、When it is a DC machine B、When it is an AC machine C、Any machine that operates on over 100 volts D、Only when working on wet steel plates
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