The drawings that are strong enough for the prize table can't be opened.

Solution:

1. Please ask the colleague who installed the advanced version of CAD to help me turn it.

2, the next latest version of CAD and AUTOCAD is relatively large, more than 2 g.

3. The next DWG drawing conversion tool, such as the drawing tool DWGTrueView provided by AUTOCAD (but this tool also has two or three hundred megabytes).

4. Download a smaller drawing software, such as "E Building" and "CAD Drawing Master", which is 20 megabytes. It not only supports browsing AutoCAD, Chen Hao, Tianzheng, Zhongwang and other CAD drawings, but also can open BIM models with hundreds of megabytes per second.