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【毎日のテーマ】【建設版20160713】

2016-07-13View Original

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参加報酬:2富。正解の報酬:9富 判断:屋根のアスファルトシートを敷く際、上下の層は互いに垂直になるように敷くべきである。 ( )
Reply #22016-07-13
間違い、問題の後は垂直でしょう

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