单项选择题
A.speed healing B.prevent infection C.reduce inflammation D.increase blood circulation
An unconscious person should NOT be（）.A.placed in a pos...
单项选择题An unconscious person should NOT be（）.
A.placed in a position with the head lower than the body B.given an inhalation stimulant C.given something to drink D.treated for injuries until conscious
An advantage of an ABC dry chemical over a carbon dioxi...
单项选择题An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
A.lack of toxicity B.the multipurpose extinguishing ability C.burn-back protection D.cooling ability
All inspected vessels on unrestricted ocean routes must...
单项选择题All inspected vessels on unrestricted ocean routes must have equipment on board for testing an individual’s（）.
A.blood B.breath C.urine D.All of the above
