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单选题
A large oil fire is best extinguished with（）
A
soda acid
B
foam
C
CO2
D
sand
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单选题A large oil fire on the deck of a ship can be fought most effectively with（）.A
dry chemicalB
foamC
high-velocity fogD
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单选题What is meant by the term overhaul in firefighting?（）A
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Smother the fire with a blanket or similar objectD
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单选题What is an advantage of using foam in fire fighting?（）A
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It absorbs heat from materials that could cause reignitionC
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Once the surface is blanketed with foam and the fire is extinguished，no further foam is required
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单选题Which of the following statements represents the correct action to take when three crew members discover a fire?（）A
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单选题The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）A
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salinity is highC
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单选题The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.A
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stop the flow of leaking fuel oil
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单选题Class A fires are best extinguished by quenching or cooling with （）.A
deprival of oxygenB
a water sprayC
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单选题Class B fires are best extinguished by smothering, i-e（）.A
deprival of oxygenB
removal of heatC
spraying of waterD
injecting of soda-acid
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单选题When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.A
air from contacting the oil vaporsB
permitting re-ignition boiling of the heated oilC
spontaneous combustion below the oil surfaceD
toxic fumes from escaping to the surface
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单选题Cargo transfer operations on a tanker need NOT be stopped when（）.A
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there is an electrical storm in the vicinityD
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单选题A fire can be extinguished by removing （）.A
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the fuelC
the oxygenD
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单选题Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.A
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closing the compartment except for the ventilatorsC
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单选题A fire in electrical equipment should be extinguished by using（）.A
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foamC
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The Dangers of a Fire.B
The Cause of a Fire.C
Learn to Use a Fire Extinguisher.D
Be Ready for a Fire.
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