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单选题
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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单选题You should conduct a sector search under which of the following circumstances（）.A
The search target is sighted and then lostB
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单选题This fire extinguisher is to be used only in case of（）A
urgencyB
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immediacyD
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单选题Fire prevention during welding or burning aboard any vessel should include （）.A
posting a fire watch in the immediate areaB
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单选题To determine if a CO2 fire extinguisher is fully charged，you would（）.A
Operate the trigger valveB
Weigh the extinguisherC
Test with a pressure gaugeD
Read the date of last test
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单选题A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.A
used at the earliest opportunityB
hydrotestedC
rechargedD
weighed again in one month
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单选题How do you operate a portable CO2 fire extinguisher?（）A
Point the horn downB
Turn cylinder upside-downC
Break the rupture discD
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考题
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单选题Which portable fire extinguisher should be used on a class C fire on board a vessel?（）A
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单选题On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）A
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单选题An engine compartment gasoline fire requires which type of extinguisher?（）A
Carbon dioxideB
Dry chemicalC
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单选题The type of extinguisher which should be used for an electricity fire is（）.A
foam or soda acidB
dry chemical or foamC
carbon dioxide or dry chemicalD
carbon dioxide or foam
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Close all fire rooms and use the dry powder extinguisher.
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单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）A
Check the tag to see when the extinguisher was last chargedB
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Weigh the extinguisher and compare the weight against that stamped on the valveD
Recharge the extinguisher at least once each year
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单选题Which portable fire extinguisher is normally recharged in a shore facility?（）A
Dry chemical (cartridge-operated)B
Water (cartridge-operated)C
Water (pump tank)D
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单选题What is the best title for this passage?A
The Dangers of a Fire.B
The Cause of a Fire.C
Learn to Use a Fire Extinguisher.D
Be Ready for a Fire.
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
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考题
单选题Each hand portable fire extinguisher must be marked with（）.A
the name of the vessel on which it is locatedB
the date that it was installedC
the names of the individuals qualified to use itD
an identification number
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