The background image of jacob operation ppt, can't be added at all.

is now working on a project, and the requirements are as follows

* ppt
* 
* ppt   

the current technique is to use jacob to manipulate ppt, tables.

has been added. < H1 > and now the problem lies in the page added here, and the background image can"t be added at all < / H1 >.
Mar.17,2021
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