(来学网)女性,22岁,妊娠22周,胎儿肾盂宽度正常测值是
  • A.
    (来学网)小于3mm
  • B.
    (来学网)小于4mm
  • C.
    (来学网)小于5mm
  • D.
    (来学网)小于6mm
  • E.
    (来学网)小于7mm
正确答案:
B