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單項(xiàng)選擇題

The preferred agent used in fighting a helicopter crash fire is（）.

A.CO₂
B.dry chemical
C.water
D.foam

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單項(xiàng)選擇題

The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.

A.45°upward
B.vertically upward
C.vertically downward
D.all of the above

單項(xiàng)選擇題

The muster list shows each rig hand’s muster station，his duties during abandonment，basic instructions，and（）.

A.all emergency signals
B.instructions for lowering the survival craft
C.the time each weekly drill will be held
D.work schedule

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