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地下水中含有多种气体成分，常见的有O2、______CO2、和H2S.
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地下水中含有多种气体成分，常见的有O2、______CO2、和H2S.
A、CO
B、N2
C、SO2
D、H2S
时间：2021-09-01 21:20
关键词：
工程地质
土木建筑工程
答案解析
B
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