⑴ CAJ格式的文件怎麼打開
caj格式的文件需要CAJViewer軟體才能打開，直接下載安裝一個CAJViewer軟體，就可以將文件打開了。方法如下：
1、在瀏覽器搜索框輸入CAJViewer，然後點擊中國知網的這一個搜索結果。
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2、進入中國知網之後，將CAJViewer下載到電腦上。
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3、然後找到剛剛下載的文件，雙擊將文件進行安裝。
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4、安裝成功之後點擊完成就可以了。
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5、然後找到需要打開的caj格式的文件，直接將它打開即可。
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注意事項：
caj格式的文件一般是學術類的文件，可以直接在中國知網下載此軟體。
⑵ 怎樣全選復制微信全部聊天記錄
1、按其中一條聊天記錄，然後選擇【更多】
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2、選擇你想要收藏或者保存的聊天記錄，狀態是方框打鉤即可。
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3、如果要保存到筆記中，那麼點擊第四個按鈕。
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4、
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4、完成以上步驟後，打開雲筆記，粘貼進去，保存即可。
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5、返回微信聊天界面，返回之前，可以把郵件刪掉即可。
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