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環境保護 毎日1問1.7 参加で賞あり 3問正解でさらに5の賞

2016-01-07View Original

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この投稿は最後にslll611によって2016-1-9 16:42に編集されました。多肢選択問題:水ポンプの電力消費を減らす方法は(ABD)です。 A.配管抵抗の低減; B. 水ポンプの適切な選定 C. 冷却水の閉鎖式システムを開放式システムに変更; D. 水ポンプのインバータ制御
Reply #22016-01-08
A、B、D、-----------------------------
Reply #32016-01-08
水ポンプの電力消費を減らす方法には(A、B、D)がある。
Reply #42016-01-08
アメリカ~~~~~~~~~~~~~~~~

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