Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.

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• Before using a fixed CO2 system to fight an engine room fire，you must（）.

  A . secure the engine room ventilation B . secure the machinery in the engine room C . evacuate all engine room personnel D . All of the above

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• Your vessel is equipped with a fixed CO2 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）

  A . Use the CO system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the CO system D . Evacuate the engine room and use the fire main system

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• An engineer, together with some motormen （）to help in the repair work.

  A . send B . sends C . was sent D . were sent

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• What is an advantage of using foam in fire fighting?（）

  A . It is effective in controlling fire in flowing oil such as coming from a broken fuel line B . It absorbs heat from materials that could cause reignition C . Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment D . Once the surface is blanketed with foam and the fire is extinguished，no further foam is required

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• One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is （）.

  A . the "snow" which is sometimes discharged along with the gas is toxic B . prolonged exposure to high concentrations of C0 gas causes suffocation C . rapid dissipation of the C0 vapor D . the C0 gas is lighter than air and a large amount is required to extinguisha fire near the deck

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• A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）

  A . ignition lag B . engine horsepower C . lube oil system pressure D . specific fuel consumptio

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• I am on fire in Engine room 的中文意思是（）.

  A . A、我船机舱失火 B . B、我船货舱失火 C . C、我船厨房失火 D . D、我船泵舱失火

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• Which of the listed classes of fire would most likely occur in the engine room of a vessel?（）

  A . Classes A and B B . Classes B and C C . Classes C and D D . Classes A and D

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• Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.

  A . Use the C0 system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the C0 system D . Evacuate the engine room and use the fire main system

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• The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

  A . evacuate all engine room personnel B . fight the fire with hand portable extinguishers C . activate the main CO bank D . stop the flow of leaking fuel oil

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• A fire in an electrical generator is considered to be （）.

  A . Class "A" B . Class "B" C . Class "C" D . Class "D&quot

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• In an operating diesel engine, pre-ignition can be caused by （）

  A . excessively late fuel injection B . oil in the air charge C . water in the fuel D . injection continuing after the fuel charge is ignited

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• A ground in an electrical circuit outside the engine room （）.

  A . cannot be detected tinder normal conditions B . is of no consequence to engineering personnel C . is indicated at the branch circuit breaker panel D . is indicated by the ground detecting lamps on the main switchboard

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• In comparing engines of equal horsepower, higher exhaust gas temperatures occur in a/an（）

  A . opposed-piston engine B . double-acting engine C . two-stroke/cycle engine D . four-stroke/cycle engine

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• In my opinion,the manner is（）that the duty engineer reported the small fire in engine room.

  A . reluctant B . positive C . possible D . improper

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• An increase in load on a diesel engine results in （） of speed of the crankshaft.

  A . a reduction B . an increase C . an outing D . a downward

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• The SOLAS convention prescribes that in the fire fighting drill the duty engineer should start the pump and supply deck water in（） minute(s).

  A . 5 B . 3 C . 2 D . 1

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• Lubricating oil viscosity in an operating diesel engine can be reduced by（）

  A . increasing cooling water flow B . increasing lube oil flow C . dilution by fuel oil D . adding SAE 70 oil

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• An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.

  A . a mattress B . spilled liquids such as oil or paint C . high voltage electrical gear D . a trash ca

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• Diesel engine exhaust noise can be reduced in an exhaust muffler by （）

  A . changing the direction of exhaust gas flow B . increasing the exhaust gas velocity C . changing the exhaust gas weight D . increasing the exhaust gas static pressure

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• In an ordinary four-stroke engine the exhaust valves open （）

  A . after TDC B . before TDC C . after BDC D . before BDC

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• When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）

  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

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• An ABC dry chemical fire extinguisher would be least effective against a fire in（）.

  A . a mattress B . spilled liquids such as oil or paint C . high voltage electrical gear D . a trash ca

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