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【空調版】毎日一問20180619

2018-06-19View Original

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判断:都市汚水の二次処理技術とは、汚水中の懸濁固体物を沈殿、浮選、ろ過などの手法によって除去し、汚水中に過剰に含まれる有毒かつ有害な物質を浄化するものである。( ) 答え:正解

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