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美国是商品经济高度发达的资本主义国家,同时,也是世界上交通运输业最发达的国家。规模庞大和错综复杂的现代交通运输系统,一方面保证了经济活动的正常进行,满足了美国人对现代生活的机动性和快节奏的要求,另一方面,也对运输市场的管理提出了更高的要求。运价是调节运输业经济活动的重要经济杠杆,合理的运价体系对运输市场的有效运行,及各种运输方式的合理配置和健康发展,都具有十分重要的调节作用。所以,美国社会
The United States is a capitalist country with a highly developed commodity economy. At the same time, the United States is also the country with the most developed transportation industry in the world. The large-scale and intricate system of modern transport ensured, on the one hand, normal economic activities, satisfied the mobility and fast-paced American demands for modern life and, on the other hand, put higher demands on the management of the transport market Request. Tariff is an important economic lever to regulate the economic activities of the transport industry. A reasonable tariff system plays an important regulatory role in the effective operation of the transport market and in the rational allocation and healthy development of various transport modes. So, American society