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공정공학 지구-계측 자동제어판-매일 한 문제-제2020-05-17문제

2020-05-17View Original

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공정공학 구역 – 계측 자동제어 버전 – 매일 한 문제 – 2020-05-17일자 문제 단일 선택문제: 121. 다음 중 압력 손실이 가장 적은 조절밸브는 ( ). A. 이중 좌석 밸브 B. 나비밸브 C. 공 모양 밸브 D. 게이트밸브 정답: C. 공 모양 밸브

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