單項選擇題

（）the survivors known more of how to cope with cold water in the sinking of MV Titanic in 1912 countless lives（）.

A.Have/could have been saved
B.Have/could have saved
C.Had/could has saved
D.Had/could have been saved

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Prior to entering a davit-launched life raft, you should make sure that（）.

A.the life raft is well ventilated of excess carbon dioxide
B.all personnel have removed their life preservers to facilitate boarding
C.the door flap has been cut away and stowed inside the raft
D.All of the above

單項選擇題

Removing which will extinguish a fire?（）.

A.nitrogen
B.Carbon dioxide
C.Sodlium
D.Oxygen