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接触コーキング改質油ブレンドバージョン 20190517

2019-05-17View 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:潤滑油と比較して、グリースの利点は ( ) です。 A. 良好な粘度温度性能 B. 良好なシール効果 C. 良好な除荷特性および振動減衰特性 D. 良好な冷却効果 回答: C 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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