汽车知识网的主要内容是——汽车知识，包括汽车基础知识、汽车维修保养知识、汽车图片三个大类，主要用文字和图片的形式来显示相关知识。-Automotive Knowledge Network is the main content- automotive knowledge, including basic knowledge of automobiles, automotive repair and maintenance of knowledge, the three major categor