The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim’s nostrils and（）.<br>A:cupping a hand around the patient's mouth<br>B:keeping the head elevated<br>C:applying his mouth tightly over the victim's mouth<br>D:holding the jaw down firmly

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

出自：海船船员证

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