(来学网)补体滴定时,若1:60的0.12ml补体为1个"实用单位",则2个"实用单位"为
  • A.
    (来学网)1:50,0.2ml
  • B.
    (来学网)1:40,0.2ml
  • C.
    (来学网)1:30,0.2ml
  • D.
    (来学网)1:25,0.2ml
  • E.
    (来学网)1:20,0.2ml
正确答案:
A
答案解析:
按比例公式:0.12×2/60=0.2(反应体系中补体的体积固定为0.2ml)/X,求得X=50,即2个"实用单位"应为1:50稀释的补体0.2ml。