(来学网)我国居民膳食中,蛋白质所提供的热能占总热能的适宜百分比为
  • A.
    (来学网)10%~15%
  • B.
    (来学网)15%~20%
  • C.
    (来学网)20%~25%
  • D.
    (来学网)40%~50%
  • E.
    (来学网)60%~70%