If a scavenge fire starts, the engine must be put to “（）” and the fuel must be taken off the cylinders affected by the fire.

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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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• Which of the following statements is not true concerning symptom of a fire in the scavenge air box?（）

  A . an increase in the exhaust temperature of the affected cylinder B . the turbocharger may surge C . the explosion pressure in all cylinders will rise violently D . smoke from the turbocharger air inlet filter will be see

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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 avoid scavenge fires occurring the engine timing and equipment maintenance （）.

  A . should be correctly carried out B . should correctly be taken place C . should carded with care D . must to carry out with great care

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• If there were a fire in the bunker tanks, you would（）

  A . close the vent B . pump out the tank C . activate the fixed CO system D . cut off the heating coil

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• If a CO2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited to combat a small electrical fire in a switchboard?（）

  A . Dry chemical B . Halon C . Low velocity fog D . Steam

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• To determine if a C02 fire extinguisher is fully charged, you would（）.

  A . operate the trigger valve B . weigh the extinguisher C . test with a pressure gauge D . read the date of last test

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• If a diesel engine fails to start，one of the likely causes is （）

  A . low compression temperature B . low ambient air pressure C . high lube oil pump pressure D . high fuel oil booster pump pressure

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• If a refrigeration compressor will not start, the reason may be （）.

  A . the pressure regulating valve is not closing B . an excessive lack of refrigerant in the system C . badly leaking discharge valves D . worn piston ring

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• If ignited，which material would be a class B fire?（）

  A . Magnesium B . Paper C . Wood D . Diesel Oil

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• If a diesel engine rotates slowly when cranked, but does not fire, the（）

  A . fuel control rack had admitted excessive fuel B . engine speed does not match the fuel rack setting C . engine has failed to reach its firing speed D . starter pinion and ring gear contact is not correct

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• A diesel engine may be hard to start if the （）

  A . air intake is restricted B . engine is cranked too fast C . vibration dampener is faulty D . exhaust back pressure is low

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• The most likely place for a fire to start through the process of spontaneous combustion is in （）.

  A . an electrical switchboard B . the pressure tanks C . the fuel oil tanks D . the oily rag bi

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• To avoid scavenge fires （） the engine timing and equipment maintenance should be correctly carried out.

  A . occurred B . occurring C . not happening D . occur

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• Once a scavenge fire is detected the engine （）.

  A . will be speeded up B . should be slowed down C . must slow down D . have to be slow dow

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• To determine if a CO2 fire extinguisher is fully charged，you would（）.

  A . Operate the trigger valve B . Weigh the extinguisher C . Test with a pressure gauge D . Read the date of last test

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• If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST （）.

  A . notify the engineer on watch B . isolate and secure the piping C . throw sand on the fire D . extinguish the fire using a combination nozzle with applicator

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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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• Once a scavenge fire is detected, fuel should be shut off from the affected cylinders and cylinder lubrication increased （） the risk of seizure.

  A . to protect B . to guard C . to maximize D . to minimize

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• If ignited, which of the listed materials would be a class "B" fire?（）

  A . Magnesium B . Paper C . Wood D . Diesel Oil

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• A fire starts when the following （） factors come together.

  A . combustible material B . ignition source C . oxygen D . A and B and C

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• If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to （）the engine.

  A . stop B . start C . speed up D . slow dow

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• What should the person do if he finds a fire He should operate ______.What should the person do if he finds a fire He should operate ______.

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