单项选择题
The fire is out of（） .
A.controlled
B.controller
C.control
D.controllable
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The air is （）. Don’t enter that area.
A.fresh
B.toxic
C.poison -
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Post two lookouts with （）.
A.sextant
B.compass
C.radar
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单项选择题
Fire in the cabins. Close all fire doors and use the （）powder extinguisher.
A.dry
B.wet
C.foam
D.portable
