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工芸基礎知識(選択問題)20180412

2018-04-12View Original

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ウォーターリングポンプは逆転して使用します。 A. 過負荷 B. 排気量が著しく低下する C. ガスを圧送できない D. 工件の性能は変わらない ヒント:ウォーターリングポンプの吸気口と排気口は非対称である。

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