A.outside B.under C.beside D.besides
单项选择题On hearing the fire signal, the crew should proceed immediately to ()their assigned duties.
A. carry on B. put out C. carry out D. take off
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