(来学网)正确的胸外按压是使胸骨下段下陷
  • A.
    (来学网)1~2cm
  • B.
    (来学网)3~4cm
  • C.
    (来学网)5~6cm
  • D.
    (来学网)7~8cm
  • E.
    (来学网)9~10cm