A.一氧化碳 B.苯 C.氮氧化合物 D.鉛 E.有機磷農(nóng)藥
A.5mg/m3 B.8mg/m3 C.10mg/m3 D.15mg/m3 E.20mg/m3
A.3.333mg/m3 B.3.33mg/m3 C.3.34mg/m3 D.3.30mg/m3 E.3.3mg/m3