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Español Translations » 历史存档[信息] » Pregunta diaria sobre protección del medio ambiente (20.12)

Pregunta diaria sobre protección del medio ambiente (20.12)

2016-12-20View Original

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Pregunta de opción única: El valor de BOD5 en las aguas residuales tratadas que se descargan en los estanques de tratamiento es menor a ____ mg/L. A.60 B.150 C.100 D.90 Selección: A
Reply #22016-12-20
El valor de BOD5 en las aguas residuales tratadas que se descargan en las plantas de tratamiento es inferior a _B___ mg/L. A.60 B.150 C.100 D.90

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Translated at 2026-07-23 04:24:29

Original: https://bbs.hcbbs.com/thread-1653963-1-1.html

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