单项选择题
A.be safe if mixed with fresh water B.prevent seasickness C.promote urine excretion D.protect against heat cramps
Immediately after abandoning a vessel, lookouts should ...
单项选择题Immediately after abandoning a vessel, lookouts should be posted aboard liferafts to look for（）
A.survivors in the water B.food and water C.land D.bad weather
When administering artificial respiration to an adult, ...
单项选择题When administering artificial respiration to an adult, the breathing cycle should be repeated about （）
A.12 to 15 times per minute B.18 to 20 times per minute C.20 to 25 times per minute D.as fast as possible
When administering artificial respiration, it is of the...
单项选择题When administering artificial respiration, it is of the utmost important to （）
A.use the mouth-to-mouth method B.clear airways C.use rhythmic pressure method D.know all approved methods
