工芸基礎知識(選択問題)20180622
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この投稿は最後にHP0377によって2018-6-22 07:14に編集されました。工程基礎知識(選択問題)20180622。次のポンプのうち、汚れた液体を送るのに最も不向きなものはどれか。 A. 往復ポンプ B. ブレードポンプ C. シングルスクリューポンプ D. 离心ポンプヒント:ブレードポンプは摩耗しやすい接触面が最も多い。
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