(来学网)正常成人血清尿素氮的参考值范围是
  • A.
    (来学网)20~30mmol/L
  • B.
    (来学网)3~5mmol/L
  • C.
    (来学网)4~5mmol/L
  • D.
    (来学网)3.2~7.1μmol/L
  • E.
    (来学网)3.2~7.1mmol/L