工芸基礎知識（選択問題）20180414
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遠心ポンプには水環式揚水ポンプが内蔵されており（分離できない）、揚水が終了したらその水環ポンプは。 A. 小流量動作 B. 全流量動作 C. 零流量動作 D. AまたはC ヒント：小流量動作は、エネルギー消費が多くなく、かつ作業用水が過度に熱くなることもない。
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