单项选择题
A. common fire B. electric fire C. oil fire D. fire
At each drill a different person should be in （）(负责)of ...
单项选择题At each drill a different person should be in （）(负责)of an extinguisher.
A.charge B.load C.discharge D.handle
（）(除了) the fire drill, there are also boat drill and em...
单项选择题（）(除了) the fire drill, there are also boat drill and emergency drill on board.
A. Except B. Although C. In addition to D. But
（）(放低) the embarkation ladder.A. LowerB. HoistC. Put on...
单项选择题（）(放低) the embarkation ladder.
A. Lower B. Hoist C. Put on D. Put down
