On hearing the fire signal, the crew should proceed immediately to （）their assigned duties.

单项选择题Efficient fire-fighting drill demands the full （）of persons in all departments of the ship.

A.operate
B.operation
C.co-operate
D.co-operation

单项选择题The signals that will be used for emergency should be clearly （）.

A. set out
B. set off
C. get off
D. cut off

单项选择题The fire drill is （）. You are dismissed.

A.finish
B.finished
C.begin
D.beginning

单项选择题Lower the （）ladder.

A.embark
B.embarkation
C.disembark
D.B+C

单项选择题The boat is （）to the water surface.

A.down
B.top
C.lower
D.up

单项选择题Ready for （）the boat.

A.lower
B.lowering
C.lowered
D.topped

单项选择题We are going to carry out an emergency （）.

A.practise
B.practice
C.drill
D.drills

单项选择题Throw a （）to the person overboard and help him come on board.

A.lifeboat
B.life-raft
C.lifebuoy
D.fire mask

单项选择题（）extinguish oil and electrical fires with water.

A.Do
B.Did
C.Never
D.Isn’t

单项选择题（） fire doors, windows, hatches, accesses and ventilators.

A.Closed
B.Close
C.Closing