汽车已经成为现代社会的主要交通工具,也是人类生活质量高低的一个重要标志。汽车的出现与发展,无疑对人类社会的发展带来了巨大的推动力。但随着汽车工业的发展,接踵而来的是严重的污染问题。目前,全球的污染问题日趋严重,已经威胁到人类赖以生存的地球环境。因此要采取各种措施降低 Cars have become the main means of transport in modern society and an important indicator of the quality of human life. The emergence and development of the automobile undoubtedly brought tremendous impetus to the development of human society. However, with the development of the automobile industry, the ensuing serious pollution problems. At present, the pollution problem in the world is worsening day by day, which has already threatened the global environment on which mankind depends. Therefore, to take various measures to reduce