l-cng在客运车辆上的应用及建立联网加气站可研报告

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4、aphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF一、前言随着我国经济和汽车工业的迅速发展，石油资源短缺的形势更加严峻，与此同时环境污染日益严重。环境保护和可持续发展已成为21世纪我国乃至世界需要解决的重要课题。在城市污染中汽车尾气排放所造成的污染占大气污染的50﹪—60%，降低车辆尾气排放已经成为城市环

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