在空分正常生产中，空气中的（）在进入空冷塔后将被洗涤清除。
A.二氧化硫
B.甲烷
C.氨气
D.氦气
参考答案：A
连词成句。
1. name is His Li Ming
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2. can I my teacher see
3. say I to my hello teacher
4. is the Where marker
5. can you What find
儿童旅游者的接待P95
