44 下列廢水分析之結果，何者最具毒性？
(A)BOD / COD = 1.0
(B)BOD / COD = 0.8
(C)BOD / COD = 0.6
(D)BOD / COD = 0

答案：登入後查看
統計： A(2), B(1), C(2), D(2), E(0) #913027