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[연습문제 2016.11.25] 참여 시 3~9개의 재산 보상 지급

2016-11-25View Original

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단일 선택문 1. 고온 원심펌프의 기계적 밀봉부의 밀봉 표면 저압측에 냉각수를 공급하는 것은 주로 ( **: A )를 위한 것입니다. A、냉각 기계 밀봉 온도 B、매체와 공기를 차단하기 C、소화 D、기계 밀봉 온도 유지 알림: 숨겨진 **가 표시된 후 답변하면 점수가 주어지지 않습니다. 감사합니다!

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