A.0.5mg/L B.1.2mg/L C.1.0mg/L D.0.1mg/L
A.3個/mL B.100個/mL C.檢出 D.100個/L
A.不應(yīng)低于0.05mg/L B.0.3mg/L C.不低于0.3mg/L D.0.8mg/L