单项选择题
（）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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相关考题
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单项选择题
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 -
单项选择题
Removing which will extinguish a fire?（）.
A.nitrogen
B.Carbon dioxide
C.Sodlium
D.Oxygen -
单项选择题
A band or collar on the top end of a boom which the topping lift, midships guy, and outboard guys are secured, is called the（）.
A.collar band
B.guy band
C.pad eye collar
D.spider band
