单项选择题
A. carry on B. put out C. carry out D. take off
Efficient fire-fighting drill demands the full （）of per...
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
The signals that will be used for emergency should be c...
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
The fire drill is （）. You are dismissed.A.finishB.finis...
单项选择题The fire drill is （）. You are dismissed.
A.finish B.finished C.begin D.beginning
