单项选择题

Treatment of frostbite includes（）.

A.rubbing affected area with ice or snow
B.rubbing affected area briskly to restore circulation
C.wrapping area tightly in warm cloths
D.warming exposed parts rapidly

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单项选择题

The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim’s nostrils and（）.

A.cupping a hand around the patient's mouth
B.keeping the head elevated
C.applying his mouth tightly over the victim's mouth
D.holding the jaw down firmly

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The principal personnel hazard unique to Halon extinguishers is（）.

A.displacement of oxygen
B.skin irritation
C.inhaling toxic vapors
D.eye irritation

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The most effective warming treatment for a crew member suffering from hypothermia is（）.

A.running or jumping to create heat
B.lying in the sun
C.a warm water bath
D.mouth-to-mouth resuscitation