单项选择题
A.immerse the burn in cold water B.administer aspirin C.apply petroleum jelly D.apply a bandage to exclude air
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.dehydrate you D.protect against heat cramps
Chemical burns are caused by the skin coming in contact...
单项选择题Chemical burns are caused by the skin coming in contact with（）.
A.acids or alkalies B.diesel oil C.acids，but not alkalies D.alkalies，but not acids
Changing rescuers while carrying out artificial respira...
单项选择题Changing rescuers while carrying out artificial respiration should be done（）.
A.without losing the rhythm of respiration B.only with the help of two other people C.by not stopping the respiration for more than 5 minutes D.at ten-minute intervals
