如何更新更改PDF文件页面背景？
<p><br></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;">使用WPS Office打开PDF文件，依次点击“编辑”--->“文档背景”--->“更新背景”。</span></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;"><br></span></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;"><span style="font-family: 微软雅黑, Microsoft YaHei;">在弹出的</span>“更新背景”界面根据所需设置背景填充、外观、位置即可。</span></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;"><br></span></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;"><img src="https://res1.wpsacdm.cache.wpscdn.cn/images/a9033af199ee67a165430af5cca35b39.gif" title="录制_2020_06_01_10_25_41_684.gif" alt="录制_2020_06_01_10_25_41_684.gif"></span></p><p style="text-align:justify;text-justify:inter-ideograph"><span style="font-family: 微软雅黑, Microsoft YaHei; font-size: 16px;"><br></span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p>
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