(来学网)按照国家卫生标准,牛奶中脂肪的含量要求
  • A.
    (来学网)≥5%
  • B.
    (来学网)≤5%
  • C.
    (来学网)≥3%
  • D.
    (来学网)3%~5%
  • E.
    (来学网)2%~3%