Method: To get the censored units by two-stage PPS sampling,investigate its service forms and service periods of EPI,together with basic vaccination rate.

This paper reveals the development tendency of university library in network information age from four aspects of the information resources sharing, information resources differentiating, service forms individualizing, and librarian quality specializing.

Taking Changshu Municipal Library as the example, this paper p robe s into the problems of that how the county (municipal) level public library to r eadjust its service strategy, service forms and service means, and how to do wel l the reference and consultancy service.

By using the literature material law,the logical law,unifying the characteristic of the handset short note,the article generalized to analyse at present our country s "the fifth media"——the handset short note to the sports industry service form and its the development impetus function.

The article has carried on the detailed elaboration to the service form of each stage.

Because of the intangibility of service,it is hard for customers to recognize and choice service.