매일 한 문제, 정답자에게 5개의 부를 지급하며, 참가자에게는 2개의 부를 지급합니다；제278문제
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불포화 폴리에스터의 주요 용도는 유리섬유 강화 플라스틱으로 사용되는 것입니다. A、접착제 B、분산제 C、개시제 D、촉매 A、접착제
A、접착제~~~~~~~~~~
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