单项选择题
A.draft of the vessel B.rate of delivery C.communication with terminal personnel D.observation of manifold valves
Drinking salt water will （）A.be safe if mixed with fres...
单项选择题Drinking salt water will （）
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
