(来学网)心肺复苏时按压与放松间隔比为()
  • A.
    (来学网)40%∶60%
  • B.
    (来学网)45%∶55%
  • C.
    (来学网)50%∶50%
  • D.
    (来学网)60%∶40%
  • E.
    (来学网)70%∶30%