環境保護デイリークイズ（12.28）

2016-12-28View Original

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単一選択問題：一般的な消泡剤は、成分によってシリコン（樹脂）系、界面活性剤系、アルカン系、およびに分けられる。A. 酸アルカリ類 B. 矿物油類 C. 黏土類 D. 酸化剤類選択：B

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環境保護 デイリークイズ（12.28）

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環境保護デイリークイズ（12.28）