單項(xiàng)選擇題Antiseptics are used principally to().

A.speed healing
B.prevent infection
C.reduce inflammation
D.increase blood circulation


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

4.單項(xiàng)選擇題After an accident the victim may go into shock and die. What should be done to help prevent shock?()

A.Slightly elevate the head and feet
B.Keep the person awake
C.Keep the person lying down and at a comfortable temperature
D.Give the person a stimulant to increase blood flow

5.單項(xiàng)選擇題According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent().

A.accumulation of carbon dioxide gas that chokes the battery
B.accumulation of explosive and toxic gases the battery can generate
C.mildew or dry rot in the battery box
D.battery failure including battery case meltdown caused by excessive heat