(来学网)预防维生素D缺乏性佝偻病服用维生素D
  • A.
    (来学网)每日100IU
  • B.
    (来学网)每日200IU
  • C.
    (来学网)每日400IU
  • D.
    (来学网)每日1000IU
  • E.
    (来学网)每日4000IU
正确答案:
C