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毎日1問、正解者には6つの富を報酬として、参加者には2つの富を報酬として与えます;第501題

2016-04-25View Original

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単一選択問題:カルシウムカーバイド法によるアセチレン生成の浄化システムで次亜塩素酸ナトリウムを使用する場合、次のうちどの材質の装置が次亜塩素酸ナトリウムの貯蔵に適しているか( ) A 炭素鋼 B ステンレス鋼 C グラスファイバー強化プラスチック D 鋳鉄 答え:C グラスファイバー強化プラスチック

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