A.≥0.40MPaB.≥0.45PaC.≤0.40MPaD.≤0.45MPa
A.≤0.20MPaB.≤0.25MPaC.≥0.20MpaD.≥0.25Mpa
A.懸浮物B.有機物C.渾濁度D.雜質(zhì)