(来学网)PR间期正常范围是
  • A.
    (来学网)0.12s
  • B.
    (来学网)0.12~0.20s
  • C.
    (来学网)0.22~0.24s
  • D.
    (来学网)0.08~0.12s
  • E.
    (来学网)0.10~0.12s