【单选题】【消耗次数：1】
某逆流吸收塔在操作时因某种原因使吸收剂入塔量减少，以致操作时的液气比小于原定的最小液气比，则发生下列情况（? ）。
①
液体出塔浓度和气体出塔浓度均增加
②
在塔的下部将发生解吸现象
③
液体出塔浓度增加，回收率不变?
④
液体出塔浓度不变，气体出塔浓度增加
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用填料吸收塔分离某气体混合物，以下说法正确的是（ ）。
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