71 典型的衛生掩埋場滲出水(leachate)BOD5值約為:
(A) 200 mg/l
(B)2,000 mg/l
(C) 20,000 mg/l
(D)200,000 mg/l

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統計: A(2), B(2), C(1), D(0), E(0) #913134