A.<3個/100ml B.0個/100ml C.0個/1000ml D.<100個/100ml E.<100個/1000ml
A.1.0~2.01 B.2.0~2.5L C.2.5~3.01 D.3.0~3.SL E.2.0~3.01
A.Cp點是溶解氧的最低點,在此之前復氧大于耗氧 B.Cp點是溶解氧的最低點,在此之前耗氧大于復氧 C.Cp點是溶解氧的最低點,在此之后耗氧大于復氧 D.Cp點若是高于衛(wèi)生標準,則水質受到污染 E.Cp點的衛(wèi)生標準是5mg/m3