A.dismissed B.dismiss C.gone D.left
单项选择题Water is used to put out ()(普通火).
A. common fire B. electric fire C. oil fire D. fire
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
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
单项选择题()(放低) the embarkation ladder.
A. Lower B. Hoist C. Put on D. Put down
单项选择题Collect oil with ()(油桶).
A.cotton B.rags C.bucket D.sawdust