单项选择题
If help has not arrived in 10-12 hours after you abandon a vessel in a survival craft，you should（）.
A.go in one direction until the fuel runs out B.plot a course for the nearest land C.take a vote on which direction you should go D.shut down the engine(s) and set the sea anchor
单项选择题 For use as protection from gas leaking from a refrigeration unit，each ship must be equipped with a（）.
单项选择题 For small，first-degree burns the quickest method to relieve pain is to（）.
单项选择题 Drinking salt water will（）.
