When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.

A、base of the flames，moving the horn from side to side，following the flames upward as they diminish

B、top of the flaming area，moving the horn from side to side，following the flames downward as they diminish

C、center of the flaming area，moving the horn vertically from top to bottom

D、bottom of the flaming area，moving the horn vertically to the top following the flames upward as they diminish

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更多“When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.”相关的问题

第1题

[] Which of the following statements represents the correct action to take when three crew members discover a fire?（）

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

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第2题

[单选题] When fighting a fire with a portable dry chemical fire extinguisher，the stream should be directed（）.

A、over the top of the flames B、off a bulkhead into the fire C、in front of the fire D、at the base of the fire

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第3题

[单选题] A fire is considered "under control" when （）.

A、all hands are at their fire stations B、all fire-fighting equipment is at the scene C、the fixed systems are activated D、the fire is contained and no longer spreading

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第4题

[] When fighting an electrical fire, you should first （）.

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

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第5题

[单选题] When used to fight fire，carbon dioxide（）.

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

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第6题

[单选题] Where do you post your （）(火势控制图)?

A、fire control plan B、fire control C、fire plan D、fire-fighting plan

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第7题

[单选题] When fighting a spreading fire resulting from a broken fuel line, you should FIRST （）.

A、look for a CO₂ extinguisher B、use a soda acid extinguisher C、shut off the fuel supply D、smother the fire with rags

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第8题

[] When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.

A、A.attempt to isolate the fire from the LPG B、B.cool the bottles or remove them from the fire area C、C.see that the valves on all LPG bottles are closed D、D.place insulating material over the bottles