出勤二日目(配管径を覚えろ!!) https://furutyblog.com/%e5%87%ba%e5%8b%a4%e4%ba%8c%e6%97%a5%e7%9b%ae%ef%bc%88%e9%85%8d%e7%ae%a1%e5%be%84%e3%82%92%e8%a6%9a%e3%81%88%e3%82%8d%ef%bc%81%ef%bc%81%ef%bc%89/