A.1600 B.1200 C.10000 D.11800
A.下雪天 B.雷雨天 C.大風(fēng)天
A.COD B.BOD C.DO D.BD
A.1.1-1.5 B.0.6-1.1 C.1.0-1.3 D.0.8-1.0
A.-0.3≤P≤1.8 B.-0.295≤P≤1.765 C.-0.25≤P≤1.765 D.-0.295≤P≤1.75
A.0.47µm B.0.45µm C.0.42µm D.0.46µm