当前我国国民经济运行的环境发生了一些深刻的变化 :1 国家经济制度不断创新 ,经济法制建设不断推进 ,社会主义市场经济不断向前发展。 2 高速公路快速发展 ,铁路火车提速 ,并实行异地售票 ,民航组建三大航空集团公司 ,机场联营 ,各种运输方式之间竞争日益激烈。 3 随着国际经 At present, there have been some profound changes in the environment for the operation of our national economy: (1) The constant innovation of the country’s economic system, the continuous development of the economic and legal system, and the continued development of the socialist market economy. 2 The rapid development of expressways, the speeding up of railway trains and the implementation of off-site ticket sales, the formation of three major aviation group companies and airport alliances by Civil Aviation has become increasingly fiercely competitive among various modes of transport. 3 With the international economy