Engine_2014 : Engineering Safety - 1537/2355
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| The rescuer can best provide an airtight seal during mouth- to-mouth ventilation 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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