/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssuser1b1781 https://cdn.slidesharecdn.com/profile-photo-ssuser1b1781-48x48.jpg?cb=1549530039 ¿´ÄãÒª²»Òª¼Ó