单项选择题
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
A survival craft being used to pick up a person who has...
单项选择题A survival craft being used to pick up a person who has fallen overboard from a vessel should approach the person（）.
A.at a high rate of speed B.under oars C.against the wind D.with the wind
A snag or other underwater obstruction may form a（）.A.V...
单项选择题A snag or other underwater obstruction may form a（）.
A.V-shaped ripple with the point of the V pointing upstream B.V-shaped ripple with the point of the V pointing downstream C.small patch of smooth water on a windy day D.smoothing out of the vessel's wake
