单项选择题
A.spoken B.said C.told D.communicated
After you activate your emergency position indicating r...
单项选择题After you activate your emergency position indicating radiobeacon，you should（）.
A.turn it off for five minutes every half-hour B.turn it off and on at five-minute intervals C.turn it off during daylight hours D.leave it on continuously
A tug is approaching a broken down steamer in moderatel...
单项选择题A tug is approaching a broken down steamer in moderately heavy weather preparing to take it in tow. In most cases the（）.
A.steamer will drift stern downwind B.tug will drift faster than the steamer C.tug should approach stern to D.tug should approach from downwind
A tourniquet should be used to control bleeding ONLY（）....
单项选择题A tourniquet should be used to control bleeding ONLY（）.
A.with puncture wounds B.when all other means have failed C.when the victim is unconscious D.to prevent bleeding from minor wounds
