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環境保護 デイリーステッカー 10.06 参加報酬 3問正解でさらに5

2016-10-06View Original

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穴埋め問題;自動車の排気ガスに含まれる主な汚染物質は、(一酸化炭素)、(炭化水素)、(NOx)です
Reply #22016-10-06
CO、SO2、固体粒子など

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