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根据吸附后吸附剂再生方法的不同，吸附分离可以分为和＿＿＿＿＿＿。

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填埋场按其场地特征，可分为＿＿＿＿＿＿和＿＿＿＿＿＿；按其填埋坑基底标高，又可分为＿＿＿＿＿＿和＿＿＿＿＿＿。填埋场的类型应根据当地特点，优先选择渗滤液可以根据＿＿＿＿＿＿、＿＿＿＿＿＿的填埋场类型。

填埋场防渗是现代填埋场区别于＿＿＿＿＿＿和＿＿＿＿＿＿的重要标志之一，也是选址、设计、施工、运行管理和终场维护中至关重要的内容。填埋场防渗的主要目的，是＿＿＿＿＿＿和填埋气体外泄污染周围的土壤和地下水，同时还要防止外来水，包括地下水、＿＿＿＿＿＿和＿＿＿＿＿＿等大量进入填埋场，＿＿＿＿＿＿渗滤液产生量。

渗滤液在填埋场衬里上的蓄积可能引起一些什么问题

President Barack Obama claimed progress Wednesday in his second-term drive to combat climate change but said more must be done to address a generational problem. One year after unveiling an aggressive plan, Obama said new【C1】limits on power plants, renewable energy projects and new【C2】for green technology have cleared the way for further action in the U.S. and abroad, despite steadfast【C3】from much of Congress. "When you take those first steps, even if they"re【C4】, and even if there are politics sometimes, you start【C5】momentum and you start mobilizing larger and larger communities," Obama said. Obama"s【C6】served as a progress report for his climate plan, which the president【C7】out last June. Twelve months later, much of the plan is in【C8】although the most ambitious steps are still up in the air and will take years to be【C9】realized. Change won"t be instantaneous, Obama【C10】. "There"s no silver bullet." Indeed, many of the steps he"s taking are【C11】, limited in scope by hostility from both parties to putting a【C12】on carbon pollution, which would require new laws from Congress. Still, Obama said he"s seeking to【C13】the problem but cutting it up into smaller pieces. "We"re moving, and it"s making a【C14】," he told a supportive crowd at the League of Conservation Voter"s annual dinner. The environmental group【C15】Obama early in his 2008 campaign.【C16】on the international front, momentum has been obscure.【C17】global climate talks next year in Paris, there are fresh【C18】that some countries are urging others to resist【C19】moves to curb carbon. That could discourage even bigger polluters from【C20】. 【C1】

A. products
B. expenditures
C. emissions
D. expectations