안전기술 교류판 매일 한 문제 (2016.5.25)
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이 게시물은 마지막으로 68589544에 의해 2016-5-27 14:38에 수정되었습니다.bg10.png 유형: 공백 채우기 문제
문제: 【이론적 기초 지식】 압력 용기는 반드시 ________, ________, ________을 해서는 안 됩니다. 과온, 과압, 과부하
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