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【毎日一問】工程基礎知識(選択問題)20200206

2020-02-06View Original

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燃料油加熱炉は、Aの状態では炎がふらつき、弱々しく力がなく、煙突からは黒煙が出ることさえある。 A、蒸気量、空気量が少ない B、燃料油の粘度が高い C、燃料油が軽い D、燃料油に水分が含まれている

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