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PUBLIC MARKS from jackiege with tags www & classify

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经常会遇到CPA、CPC、CPM、CPO、PPC、PPL、CPTM等缩写字母，这些都是有关网络广告定价模式的缩写短语，下面是《网络营销基础与实践》第二版第6章“网络广告基础”中对这些概念的解释。

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