A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above
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A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can
A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class 'B' fires
A.electricity
B.fuel
C.oxygen
D.heat
A.opened and burned material removed
B.left closed with vents off until all boundaries are cool
C.checked for oxygen content
D.doused with water to prevent reflash
A.use all CO2 available to cool the surrounding area
B.stand by with water or other agents
C.thoroughly ventilate the space of CO2
D.jettison all burning materials
最新試題
A large oil fire on the deck of a ship can be fought most effectively with（）.
Any extinguishing agent used on a Class C fire must have which important property?（）
An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
At night while the ship is tied up to the dock，a fire breaks out in a cargo hatch. After sounding the alarm，what should the person on watch do?（）
An important step in fighting any electrical fire is to（）.
At the required fire drill conducted aboard a ship，all persons must report to their stations and demonstrate their ability to perform the duties assigned to them（）.
A ship helicopter landing deck on which fueling operations are conducted must have a fire protection system that is capable of discharging at 100 psi pressure a foam spray of at least（）.
An inert gas system on a tanker should be used to（）.
A marine chemist issues gas free certificates and is certified by the（）.