A fire of escaping liquefied flammable gas is best extinguished by（）.

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• A definite advantage of using water as a fire extinguishing agent is its characteristic of（）.

  A . alternate expansion and contraction as water in a liquid state becomes a vapor B . absorption of smoke and gases as water is converted from a liquid to a vapor C . rapid contraction as water is converted from a liquid to a vapor D . rapid expansion as water absorbs heat and changes to steam

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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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• Emergency escape breathing device on board shall have a duration of service no less than（）.

  A . 20 minutes B . 15 minutes C . 10 minutes D . 5 minute

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• If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）

  A . Make periodic inspections of bilges B . Keep the barge under constant surveillance C . Have a properly certificated tankerman or at least one licensed officer on board the towing vessel D . Verify ullage reading

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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 burning AC motor would be considered what class of fire?（）

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

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• Control of fire on a ship should be addressed（）.

  A . immediately after restoring vital services B . immediately C . following control of flooding D . following establishment of fire boundarie

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• If you must enter a room or compartment to combat the fire, keep an escape path （）.

  A . open B . close C . opens D . close

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• International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code) is a part of（）

  A . SOLAS B . MARPOL C . STCW D . Ballast Water conventio

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• A fire in a pile of linen is considered to be a class （）.

  A . A fire B . B fire C . C fire D . D fire

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• Any ship damping a pipe could（）an immedidate danger of fire.

  A . meet B . face C . be in front of D . follow

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• A fire in the galley always poses the additional threat of（）.

  A . contaminating food with extinguishing agent B . shutting all sources of air into the compartment C . closing the sea chest D . a grease fire in the ventilation system

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

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

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• Which is a disadvantage of Halon as a fire extinguishing medium?（）

  A . Conducts electricity B . Difficult to store C . Large volume necessary to be effective D . Ineffective in powdered metal fire

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• A fire in a pile of canvas would be classified as a （）.

  A . class A B . class B C . class C D . class D

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• ACCIDENTAL ESCAPE OF OIL OUT OF A TANK WHEN IT GETS TOO FULL BECAUSE PUMPING WAS NOT STOPPED IN TIME defines（）.

  A . Overloading B . Over discharging C . Overflow D . Overtaking

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• The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.

  A . pressure B . toxicity C . temperature D . flammability

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• Any ship damaging a pipe could（）an immediate danger of fire.

  A . meet B . face C . be in font of D . follow

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

  A . Conduction of heat to adjacent surfaces B . Direct radiation C . Convection D . All of the above

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• Fighting a fire in the galley poses the additional threat of（）.

  A . contaminating food with extinguishing agent B . spreading through the engineering space C . loss of stability D . a grease fire in the ventilation system

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• The class of fire on which a blanketing effect is essential to extinguish the fire is （）.

  A . class A B . class B C . class C D . class D

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• I believe that for his escape he took advantage of the migration of a flock of wild birds. In this sentence, what is the underlined part called?

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• Escaping a fire is a serious matter. Knowing what to do before a fire breaks out can save a life. For example, people should know the safety measures to take before opening a hall door during a fire. Also, make sure everyone knows how to unlock doors that may be in the escape path. At times, a key is needed to unlock a door from the inside. So, keep the key in the lock, or, you can put the key on a key ring and put it where it can be found easily.

  If you live in an apartment, know the ways you can use to get out. Show everyone in the family these routes. Stress the importance of using stairways or fire escapes, not elevators. From most homes and the lower floors of apartment buildings, escape through windows is possible. Learn the best way of leaving by a window with the least chance of serious injury. In a home fire, windows are often the only means of escape. The second floor window sill is usually not more than 13 feet from the ground. An average person, hanging by the fingertips, will have a drop of about six to the ground. Of course, it is after to jump a short way than to stay in a burning building. Rolling away from the building when you land. Windows are also useful when you are waiting for help. Often you'll be able to stay in the room for several minutes if you keep the door closed and the windows open. Keep your head low in the window to be sure you get fresh air rather than smoke that may have leaked into the room. On a second or third floor, the best windows for escape are those which open onto a roof or balcony. From the roof or balcony, a person can either drop to the ground or await rescuer. Dropping onto cement or pavement might end in injury. Bushes, soft earth, and grass can help to break a fall. A rope ladder should be considered when the drop is too great. In a town where the fire department acts quickly, it may be best to wait for rescuer. Close the doors and wait by an open window for help. Shout for help. Be sure to close the door before opening a window. Otherwise, smoke and fire may be drawn into the room by the draft. From most homes you can escape a fire through the ______. A．attic B．garage C．windows D．balcony

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• The boy had a _____ escape when he ran across the road in front of the bus.

  A．close B． short C． narrow D． fine

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