A.1,1B.0.5,1C.1,2D.0.5,0.5
A.样品浓度最大值B.样品浓度最小值C.样品浓度平均值D.排放限值
A.±2,±2,±1 B.±5,±5,±2 C.±5,±5,±1 D.±5,±5,±5