题目内容
吸收混合气中本，已知摩尔分数y=0.04,吸收率是80%,则比摩尔分数Y、Y2是（).
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什么是吸收？
The author's mother was sad at the news that the author was going to marry
Recently, the family had picnics and gatherings quite often under the pine tree in the park.
The deepening love and close relationship between the writer and her mother grew with the pine trees.
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