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매일 한 문제, 정답자에게 5개의 부를 지급하며, 참가자에게는 2개의 부를 지급합니다;제309문 [

2016-06-08View Original

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선택: 이펜탄에는 없음 ( ). A. 1차 탄소 B. 2차 탄소 C. 3차 탄소 D. 4차 탄소 C. 3차 탄소
Reply #22016-06-08
이 친척들, 한 명도 모르겠어요
Reply #32016-06-08
옥상 위에, 이 친척들은 동남서북을 대표해요!
Reply #42016-06-08
D일 거예요, 다이메틸부탄??
Reply #52016-06-08
이펜탄에는 없다 (D). A. 1차 탄소 B. 2차 탄소 C. 3차 탄소 D. 4차 탄소

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