A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above
您可能感興趣的試卷
你可能感興趣的試題
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
An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
An aircraft has indicated that he wants you to change course and follow him. You cannot comply because of an emergency on board. Which signal should you make?（）
An inert gas system on a tanker should be used to（）.
A spanner is a（）.
A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.
All portable fire extinguishers must be capable of being（）.
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.
A spring line is（）.