WGN 100 · Welding BasicsSession 1 · Hour 1 · Mask onInstructor cue 얼굴은 점수가 아니다.90 minNow Open · 5 min left · next Demo한ENScriptBodyClearHour 1Mask onHour 2Follow Mask onHour 3Your turn · Mask onHour 4Check Mask onThis browser cannot play the film.CheckThe face is not a grade. Week 1: name, order, result. Then The face is not a grade.