(来学网)消化性溃疡活动期大便隐血试验阳性提示出血量为
  • A.
    (来学网)<1ml
  • B.
    (来学网)1~2ml
  • C.
    (来学网)2~3ml
  • D.
    (来学网)3~4ml
  • E.
    (来学网)>5ml