单项选择题
A.6 short blasts and 1 long blast B.long blast mare than 6 short blasts C.more than 6 short blasts and 1 long blast D.1 long blast of at least 10 seconds
If you have to abandon ship and enter a life-raft, your...
单项选择题If you have to abandon ship and enter a life-raft, your main course of action should be （）.
A.remain in the vicinity of the vessel B.head for the closest land C.head for the closest sea-lanes D.get a majority opinion
In the first 24 hours after abandoning a vessel, water ...
单项选择题In the first 24 hours after abandoning a vessel, water should be given only to personnel who are（）.
A.thirsty B.sick or injured C.wet D.awake
Diesel fuel is relatively safe to handle due to its low...
单项选择题Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the （）.
A.flash point B.auto-ignition point C.volatility point D.upper explosive limit
