A. C1 and C2
B. C1, C2, N, and O
C. N and O
D. C1, C2, and N
E. None
收錄日期: 2021-04-21 13:26:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150801093631AAuj4rI