1.C2H4
2.C3H4
3.C2H6O
4.C3H8O
更新1:
答案是 4.C3H8O
答案是 4.C3H8O
收錄日期: 2021-04-21 12:54:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130201000010KK03723