服务业通常被看作是国民经济中工业结构的巨大延伸部分。实际上 ,服务业是国民经济各部门协调发展不可缺少的组成部分 ,它的社会功用不容忽视。一经济部门可分为两类 ,即物质生产部类和非物质生产部类。第一、二产业属于前者 ,第三产业 (广义上的服务业 )属于后者。非物质生产 Services are often seen as a huge extension of the industrial structure in the national economy. In fact, the service industry is an indispensable part of the coordinated development of all branches of the national economy. Its social function can not be ignored. An economic sector can be divided into two categories, namely, the material production department and the non-physical production department. The first and second industries belong to the former, while the third industry (in the broad sense, the service industry) belongs to the latter. Non-material production