A fire may be spread by which of the following means?（）

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  A . making a structural change to the vessel B . a short circuit near the compass C . belt buckles D . All of the above

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• On a ship，a fire pump may be used for other purposes if（）.

  A . the other services are run off a reducing station with a pressure gage B . a separate fire pump is available for use on the fire main C . all other services are operated by a manifold near the pump D . All of the above

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• A fire starting by spontaneous combustion can be expected in which condition?（）.

  A . Paints，varnish，or other liquid flammables are stowed in a dry stores locker B . Inert cargoes such as pig iron are loaded in a wet condition C . Oily rags are stowed in a metal pail D . Clean mattresses are stored in contact with an electric light bul

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• To prevent the spread of fire by convection you should （）.

  A . remove combustibiles from direct exposure B . cool the bulkhead around the fire C . close all openings to the area D . shut off electrical power

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• In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by （）.

  A . convection B . conduction C . radiation D . ventilatio

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• A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.

  A . a low velocity spray applicator B . a water spray or solid stream C . at least two spray patterns of water D . at least 25 psi delivered pressure

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• The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.

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• Fire dampers prevent the spread of fire by（）.

  A . convection B . conduction C . radiation D . direct contact

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• If the action of the engine indicates that some of the cylinders are not firing, the ones affected may be determined by watching （）.

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• The spread of fire is prevented by（）.

  A . cooling surfaces adjacent to the fire B . leaving combustibles in the endangered area C . increasing the oxygen supply D . All of the above

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• Fire fighting equipment requirements for a particular vessel may be found on the（）.

  A . Certificate of Inspection B . Certificate of Seaworthiness C . Classification Certificate D . Certificate of Registry

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• A towing vessel’s fire detection system may be certified to comply with the Coast Guard’s towing vessel fire protection regulations by（）.

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• Convection spreads a fire by（）.

  A . heated gases flowing through ventilation syetem B . the transfer of heat across an unobstructed space C . burning liquids flowing into another space D . transmitting the heat of a fire through the ships metal

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• A distorted furnace in a fire-tube auxiliary boiler may be the result of （）

  A . firing for extended periods in the low fire mode B . overheating, due to waterside deposits C . varying the water level above the crown sheet D . carrying excessive alkalinity in the boiler water

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• To prevent the spread of fire by conduction, you should （）.

  A . cool the bulkheads around the fire B . remove combustibles from direct exposure C . close all openings to the area D . shut off all electric power

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• A fire can be extinguished by removing （）.

  A . the heat B . the fuel C . the oxygen D . any of the above

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• The spread of fire is NOT prevented by（）.

  A . shutting off the oxygen supply B . cooling surfaces adjacent to the fire C . removing combustibles from the endangered area D . removing smoke and toxic gases by ensuring adequate ventilatio

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• A firebox explosion in an automatically fired auxiliary boiler may be the result of （）

  A . excessive purging before lighting off B . insufficient trail for ignition period C . a faulty transformer in the ignition circuit D . insufficient purging before lighting off

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• A galley grease fire on the stove may be extinguished using（）.

  A . water B . foam C . the range hood extinguishing system D . fire damper

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• A fire pump may be used for other purposes if（）.

  A . the other services are run off a reducing station with a pressure gage B . one of the required pumps is kept available for use on the fire main system at all times C . no relief valves are installed D . all of the above conditions are met

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• Radiation can spread a fire by （）.

  A . transmitting the heat of a fire through the ship s metal B . burning liquids flowing into another space C . heated gases flowing through ventilation systems D . the transfer of heat across an unobstructed space

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• The spreading of fire as a result of heat being carried through a vessels ventilation system, is an example of heat transfer by （）.

  A . conduction B . convection C . radiation D . windage

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• If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of （）.

  A . unburned carbon particles B . excess nitrogen C . a lack of oxygen D . excess hydroge

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