(来学网)正常成人,蛋白质占体细胞的比例是()
  • A.
    (来学网)6%~9%
  • B.
    (来学网)16%~19%
  • C.
    (来学网)23%~29%
  • D.
    (来学网)36%~39%
  • E.
    (来学网)46%~49%