(来学网)成人24h粪代谢氮为
  • A.
    (来学网)0.4~0.5g
  • B.
    (来学网)0.6~0.9g
  • C.
    (来学网)1.2~1.5g
  • D.
    (来学网)1.5~1.8g
  • E.
    (来学网)1.8~2.0g