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单选题
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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更多 “单选题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 vaporB absorption of smoke and gases as water is converted from a liquid to a vaporC rapid contraction as water is converted from a liquid to a vaporD rapid expansion as water absorbs heat and changes to steam” 相关考题
考题
Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．A.fire-extinguishing mediumB.a standard fire testC.a non-combustible materialD.a fire main
考题
A galley grease fire on the stove may be extinguished using______．A.waterB.foamC.the range hood extinguishing systemD.fire dampers
考题
After extinguishing a fire with CO2, it is advisable to ______.A.use all CO2 available to cool the surrounding areaB.stand by with water or other agentsC.thoroughly ventilate the space of CO2D.jettison all burning materials
考题
An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.A.lack of toxicityB.the multipurpose extinguishing abilityC.burn-back protectionD.cooling ability
考题
Generally, the first action in extinguishing an LFG fire caused by escaping gas is to ______.A.sweep flames away with water sprayB.shut off the leakC.use a chemical foam fire extinguisherD.call the local fire department
考题
Deep-fat cooking equipment shall be fitted with the following:（）A、An automatic or manual fixed extinguishing system tested to an appropriate standardacceptable to the OrganizationB、Controls for manual operation of the fire-extinguishing system which are clearlylabeled for ready use by the crewC、Arrangements for automatically shutting off the electrical power upon activation of thefire-extinguishing systemD、an alarm for indicating operation of the fire-extinguishing system in the galley wherethe equipment is installed
考题
单选题Which characteristic is an advantage of Halon as a fire extinguishing medium?（）A
Electrically non-conductiveB
Relatively inexpensiveC
Effective against chemicals containing an oxidizerD
All of the above
考题
单选题On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.A
acrylic acidB
benzeneC
oleumD
vinyl toluene
考题
单选题A class B fire is most successfully fought by（）.A
preventing oxygen from reaching the burning materialB
cooling the burning material below its ignition temperatureC
using the extinguishing agent to make the burning material fire-resistantD
using the extinguishing agent to absorb the heat
考题
单选题A fire in the galley always poses the additional threat of（）.A
contaminating food with extinguishing agentB
shutting all sources of air into the compartmentC
closing the sea chestD
a grease fire in the ventilation system
考题
单选题The basic training in fire prevention and fire fighting should include the theoretical elements which should cover （）.A
the three elements of fire and explosionB
lower and upper flammable limitsC
classification of flies and applicable extinguishing agentsD
All of the above
考题
单选题What is an advantage of using foam in fire fighting?（）A
It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)B
Most foams can be used with dry chemicals to attack a fire by two methodsC
Foam is effective on combustible metal firesD
Foam can be made with seawater or fresh water
考题
单选题A definite advantage of using water as a fire extiguishing agent is its characteristic of（）.A
alternate expansion and contraction as water in a liquid state becomes a vaporB
absorption of smoke and gases as water is converted from a liquid to a vaporC
rapid contraction as water is converted from a liquid to a vaporD
rapid expansion as water absorbs heat and changes to steam
考题
单选题A galley grease fire on the stove may be extinguished using（）.A
waterB
foamC
the range hood extinguishing systemD
fire dampers
考题
单选题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 lineB
It absorbs heat from materials that could cause reignitionC
Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishmentD
Once the surface is blanketed with foam and the fire is extinguished，no further foam is required
考题
单选题Generally, the first action in extinguishing an LFG fire caused by escaping gas is to（）.A
sweep flames away with water sprayB
shut off the leakC
use a chemical foam fire extinguisherD
call t e local fire department
考题
单选题Water is a very effective fire extinguishing agent because it（）A
will remove all the toxic fumes from the airB
has the greatest cooling abilityC
will leave no harmful residueD
completely removes combustible vapors from the air
考题
单选题The best method of extinguishing a class A fire is to（）.A
remove oxygen from the areaB
cool fuel below ignition temperatureC
smother with CO2D
smother fire with foam
考题
多选题Deep-fat cooking equipment shall be fitted with the following:（）AAn automatic or manual fixed extinguishing system tested to an appropriate standardacceptable to the OrganizationBControls for manual operation of the fire-extinguishing system which are clearlylabeled for ready use by the crewCArrangements for automatically shutting off the electrical power upon activation of thefire-extinguishing systemDan alarm for indicating operation of the fire-extinguishing system in the galley wherethe equipment is installed
考题
单选题What are the most important reasons for using water fog to fight fires?（）A
Smothers burning surfaces，organically destroys fuelB
Cools fire and adjacent surfaces，provides protective barrierC
Reaches areas not protected by steam or CO2 smothering systemsD
Allows fire to be attacked from leeward，saturates liquid surfaces
考题
单选题Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）A
CO2B
FoamC
Water fogD
Soda acid
考题
单选题The fire extinguishing action of CO2 comes mostly from （）.A
breaking the fire chemical chain reactionB
smotheringC
coolingD
isolating the heat from the fuel
考题
单选题The best method of extinguishing a class A fire is to （）.A
remove oxygen from the areaB
smother fire with foamC
smother fire with CO2D
cool fuel below ignition temperature
考题
单选题After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.A
opened and burned material removedB
left closed with vents off until all boundaries are coolC
checked for oxygen contentD
doused with water to prevent reflash
考题
单选题Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.A
sweep flames away with water sprayB
shut off the leakC
use a chemical foam fire extinguisherD
call the local fire department
考题
单选题After extinguishing a fire with CO2，it is advisable to（）.A
use all CO2 available to cool the surrounding areaB
stand by with water or other agentsC
thoroughly ventilate the space of CO2D
jettison all burning materials
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