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하루에 한 문제씩 정답을 맞히면 5부의 보상을 받으며, 참여자는 2부의 보상을 받습니다.;질문 302

2016-05-24View Original

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선택하다: 폴리에스테르는 다음 중 어떤 유형의 중합체에 속합니까? ( ) A. 폴리에스테르 B. 폴리에테르 C. 폴리아미드 D. 폴리올레핀 A. 폴리에스테르
Reply #22016-05-24
폴리에스테르는 다음 중 어떤 유형의 중합체에 속합니까? (A) A. 폴리에스테르 B. 폴리에테르 C. 폴리아미드 D. 폴리올레핀
Reply #32016-05-24
에이,,,,,,,,,,,,
Reply #42016-05-24
폴리에스테르는 다음 유형의 중합체 중 어느 것입니까? (a)

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