/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: EngTian1 https://cdn.slidesharecdn.com/profile-photo-EngTian1-48x48.jpg?cb=1523470209 ¨q¡É¨r¡²¦á¦à¦á¡³¨q¡É¨r ¡¡¡¡¡¡°¢ÃÖÍӷ𣮣®£®