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接触コーキング改質油ブレンドバージョン 20190912

2019-09-12View Original

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参加する:賞品 1 フォーチュン;正解する:賞品 3 富。 https://bbs.hcbbs.com/static/image/hrline/2.gif https://bbs.hcbbs.com/static/image/hrline/3.gif 多肢選択問題:ポンプが周波数変換技術を使用すると、圧力、速度、電力によりポンプの寿命が短くなります ( )。**延長するとメンテナンスコストと作業負荷が軽減されます。A. 増加 B. 減少 C. 変化なし D. 突然変異 答え: B https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif 注記:答えは2日後に自動的に発表されます。

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