100+ Www interfax PowerPoint (PPT) Presentations, Www interfax PPTs

Www interfax - PowerPoint PPT Presentation

The Invention of Airplanes

The Invention of Airplanes. ?????????: ?????? ?????????. Paper kites used by the Chinese in religious ceremonies , for merriment and checking the weather conditions. Leonardo da Vinci made the first real study of the flight. Later his theory was applied in practice in the 19 century.

★ ★ ★ ★ ★

314 views • 10 slides

View Www interfax PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Www interfax PowerPoint presentations. You can view or download Www interfax presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.

'Www interfax' diaporamas de présentation

Www interfax - PowerPoint PPT Presentation

The Invention of Airplanes