A.lowerB.loweringC.loweredD.toppedReady for （）the boat.……

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

单项选择题Inform the bridge and give the alarm at once （）the fire.

A. in case
B. case of
C. in case of
D. in the case of