单项选择题
Antiseptics are used principally to（）.
A.speed healing B.prevent infection C.reduce inflammation D.increase blood circulation
单项选择题 An unconscious person should NOT be（）.
单项选择题 An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
单项选择题 All inspected vessels on unrestricted ocean routes must have equipment on board for testing an individual’s（）.
