(来学网)4个月时小儿的胎儿型血红蛋白(HbF)为
  • A.
    (来学网)<1%
  • B.
    (来学网)<2%
  • C.
    (来学网)<5%
  • D.
    (来学网)<10%
  • E.
    (来学网)<20%
正确答案:
E