제3장 폭발 기초 지식 1
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1. 방폭형 방폭 전기 장비를 사용하여, 화재 위험성이 Class A인 가스를 생산하거나 저장할 경우, 그 가스의 폭발 하한치는 ( )입니다. A≤10% B≥10% C＜10% D＞10% 정답: C
정답을 맞혀도 재산이 생기는 건 아니에요. 없다면 앞으로는 참여하지 않을 거예요
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