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工芸基礎知識(選択問題)20180609

2018-06-09View Original

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この投稿は最後にHP0377によって2018-6-9 07:54に編集されました。工程基礎知識(選択問題)20180609 次のポンプのうち、特別な対策を講じなければ自吸機能を持たないものはどれか。 A. 水環ポンプ B. 開放型渦巻きポンプ C. ブレードポンプ D. 离心ポンプ
Reply #22018-06-09
ガンはAです
Reply #32018-06-09
答えはDです。遠心ポンプには一般的に自己吸上げ能力がありません

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