(来学网)为预防营养性维生素D缺乏性佝偻病,小儿每日口服维生素D的剂量是
  • A.
    (来学网)1600~2000IU
  • B.
    (来学网)400~800IU
  • C.
    (来学网)1300~1500IU
  • D.
    (来学网)200~300IU
  • E.
    (来学网)900~1200IU