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工芸基礎知識(選択問題)20181120

2018-11-20View Original

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冷凍システムの以下の部位①コンデンサ;②貯液器;③排出圧力計接続部;④吸込圧力計接続部;⑤膨張弁で、空気を抜くために使えるのは 。 A.①③④ B.①②③④ C.①③ D.どれも可能

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