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環境保護 デイリーステッカー 5.18 参加報酬 3 正解でさらに3

2016-05-18View Original

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単一選択問題;「騒音排出」とは、騒音源が周囲の生活環境に( )騒音を放出することを指す。 A. 散発 B. 拡散 C. 排出 D. 辐射。D

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