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接触コーキング改質油ブレンドバージョン 20190703

2019-07-03View 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:クーラー掃除の際に水路の水抜きが必要な理由は()です。 A. ライン掃引圧力を確保する B. ライン掃引温度を確保する C. ライン掃引品質を確保する D. 圧力抑制を防ぐ 回答: D 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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