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工芸基礎知識(選択問題)20180623

2018-06-23View Original

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以下のポンプのうち、高粘度の液体の輸送に適していないのは 。 A.遠心ポンプ B.渦巻きポンプ C.スクリューポンプ D.往復ポンプ ヒント:渦巻きポンプは、特に高粘度の液体を送る際に水力効率が低い。

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