A、secure the electric supply
B、ventilate area to remove smoke
C、start the fire pump and lead out hose
D、apply foam
更多“When there is a fire in a large electric motor, normally the very FIRST step is to （）”相关的问题
A、there are passengers berthed on board B、navigating in excess of eight hours C、the vessel has substantial wood in its construction D、there is no automatic fire-detection system installed
A、A.is not an effective agent on Class B fires B、B.does little or no cooling C、C.dissipates quickly D、D.is rapidly absorbed by the liquid
A、A.air supply is shut off B、B.fuel supply is shut off C、C.water supply is shut off D、D.safety valve lifts
A、only when there is positive stability B、only when there is negative stability C、only when there is neutral stability D、at all times
A、only when there is positive stability B、only when there is negative stability C、only when there is neutral stability D、at all times
A、only when there is positive stability B、only when there is negative stability C、only when there is neutral stability D、at all times
A、Carbon dioxide is corrosive when exposed to fire B、Carbon dioxide should be applied slowly to a large engine room fire C、Its total cooling effect is far greater than water D、Its smothering effect is excellent for class B fires
A、a tug comes alongside while the tanker is loading grade D and E cargoes B、a large，fresh oil spill is discovered immediately adjacent to the side of the tanker C、there is an electrical storm in the vicinity D、there is a fire on the dock or on a nearby vessel
A、a tug comes alongside while the tanker is loading grade B、and E cargoes B. a large，fresh oil spill is discovered immediately adjacent to the side of the tanker C、there is an electrical storm in the vicinity D、there is a fire on the dock or on a nearby vessel
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