(来学网)重度有机磷农药中毒患者,血胆碱酯酶活力小于
  • A.
    (来学网)30%
  • B.
    (来学网)40%
  • C.
    (来学网)50%
  • D.
    (来学网)55%
  • E.
    (来学网)75%