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毎日1問、正解者には6つの富を、参加者には2つの富をプレゼント;9月24日

2016-09-24View Original

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複数選択問題:重合製造において、重合系に緩衝剤を添加し、タンク内のpH値を中性範囲に保つことで、分散剤と重合系の安定性を確保し、PVC樹脂が良好な粒径を持つようにする。以下のうち、緩衝剤として適しているのは( ) A、水酸化ナトリウム B、炭酸水素アンモニウム C、炭酸水素ナトリウム D、リン酸三カルシウム 答え:A B C D
Reply #22016-09-24
A、水酸化ナトリウム B、炭酸水素アンモニウム

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