<p>조립부품준비(드릴가공) - [인천소방고] 드릴작업1<br></p><p><br></p><p><a href="https://www.youtube.com/watch?v=ilXUSoA_xHQ" target="_blank">https://www.youtube.com/watch?v=ilXUSoA_xHQ</a><br></p>