对于脱甲烷塔而言，其关键组份是（）。 A.H2 B.甲烷 C.乙烯 D.CO_爱下问搜题

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问题多项选择题

对于脱甲烷塔而言，其关键组份是（）。

A.H₂

B.甲烷

C.乙烯

D.CO

答案

参考答案：B, C

选择题

Tom thought too much about _______. [ ]

A. which I had said

B. what I had said

C. that I had said

D. I had said

单项选择题

下列信息不属于信用卡正面内容的是（）。

A.卡号

B.持卡人姓名拼音

C.持卡人签名