第二步：选择需要转换的文件格式
打开软件界面选择你需要的功能，c7 app支持，PDF互转Word，PDF互转Excel，PDF互转PPT，PDF转图片等。
第三步：点击【开始转换】按钮
点击“开始转换”按钮， 开始文件格式转换。等待转换成功后，即可打开文件。三步操作，顺利完成文件格式的转换。
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