單項(xiàng)選擇題An engine compartment gasoline fire requires which type of extinguisher?（）.

A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above


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1.單項(xiàng)選擇題An effective method for moving patients with spinal injuries onto a spine board is known as the（）.

A.pack-strap carry
B.two man extremities carry
C.fireman's drag
D.four man log roll

2.單項(xiàng)選擇題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?（）

A.Fire a red flare at night or a red smoke signal by day
B.Send the Morse signal N by flashing light
C.Make a round turn (360°) and resume course
D.Make an S turn (hard right then hard left) and resume course

3.單項(xiàng)選擇題An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.

A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above

4.單項(xiàng)選擇題An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.

A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can

5.單項(xiàng)選擇題All portable fire extinguishers must be capable of being（）.

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