A.safetyB.safeC.savingD.saveI have some questions about……

单项选择题The fire is out of（） .

A.controlled
B.controller
C.control
D.controllable

单项选择题The air is （）. Don’t enter that area.

A.fresh
B.toxic
C.poison

单项选择题Post two lookouts with （）.

A.sextant
B.compass
C.radar
D.binoculars

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

单项选择题After joining the ship, the crew members should be （）with their emergency duties.

A.know
B.familiarize
C.familiar
D.familiarity