【毎日一問】汚水知識-9.23(返信+2、正解+4)
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この投稿は、2015年12月29日 09:22に五郎八卦棍によって最終的に編集されました。判断問題:水処理においてコロイドを凝集させる主な方法は、コロイド系に電解質を添加することです。
A. 間違い;B.正解 答え:B.正解
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