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工芸基礎知識(選択問題)20180423

2018-04-23View Original

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この投稿は、2018年4月23日07時43分にHP0377によって最終的に編集されました。遠心ポンプが設計上の最適な動作状態で最も高い効率を発揮するのは、その状態での損失が最も小さいからです。 A. 漏れ B. 機械的摩擦 C. ポンプ内の液体の摩擦 D. 液体がインペラに衝突すること
Reply #22018-04-23
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