(来学网)某患者当血浆肌酐和尿素氮开始升高时,内生肌酐清除率至少降至
  • A.
    (来学网)20%
  • B.
    (来学网)10%
  • C.
    (来学网)30%
  • D.
    (来学网)50%
  • E.
    (来学网)70%