Data is organized in a number of categories - Sales, Security, Computer, Internet, Communication, Financial Management, Training, etc. -, each category being further organized in sub-categories.
同时还数据对进行了分门别类的管理，类别有销售、安全、计算机、因特网、通信、金融管理和培训等，每个分类又有进一步的子分类。
Data is organized in a number of categories - Sales, Security, Computer, Internet, Communication, Financial Management, Training, etc. -, each category being further organized in sub-categories.
同时还数据对进行了分门别类的管理，类别有销售、安全、计算机、因特网、通信、金融管理和培训等，每个分类又有进一步的子分类。
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