如疑有头或颈部外伤，只能采用双手托颌法。

B. If head or neck trauma is suspected, use the jaw-thrust maneuver only.

youdao

如疑有头或颈部外伤，只能采用双手托颌法。

B. If head or neck trauma is suspected, use the jaw-thrust maneuver only.

youdao