单项选择题
If a crewman suffers a second-degree burn on the arm，you should（）.
A.drain any blisters B.apply antiseptic ointment C.scrub the arm thoroughly to prevent infection D.immerse the arm in cold water
单项选择题 If a crew member is exposed to phenol by way of skin or eye contact，you should IMMEDIATELY（）.
单项选择题 Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.
单项选择题 First aid treatment for small cuts and open wounds is to（）.
