Install mechanical engineer cad20 10, which is generally a digital signature warning.

"Digital Signature" in 1 CAD is to ensure that your CAD file has not been modified by a third party. It has nothing to do with your question.

2. Go to the DWG file, right click, click "Open Mode", select ACAD.EXE in your CAD installation directory, and then select the "Always open with this program" check box below. Not bad.

Why European empires (such as the sun never sets, Russia, etc. ) Not to destroy the Qing government, but to sign a treaty with China, so China has no chance to win?

Aesthetic signature longs for love at first sight.

Dungeons and Dragons 2 Dark Mysteries Collection

What are the seats in Yang Mi? Is that famous singer or actor a Pisces?

Is there a wave of dancing with Zhang Ziyi in the same box and performing an elevator romance, which makes your heart beat?

May I ask when A Xin is happy? Birth Day was published in Chinese mainland? thank you

Are there any movies based on Sherlock Holmes' detective stories in history? What are their names?

Warm-hearted sentences comfort a girlfriend in a bad mood

Looking for a PS master~! ! ! ! ! ! ! ! ! ! ! !

Brilliant and inspiring personality signature