(来学网)晚期妊娠双顶径测量误差范围是()
  • A.
    (来学网)2~3mm
  • B.
    (来学网)4~5mm
  • C.
    (来学网)6~7mm
  • D.
    (来学网)8~9mm
  • E.
    (来学网)5~6mm