The paper introduced the current situation of water charges calculation and collection,pointed out the problems existing in the issue and presented suggestions to the reform of water charges system.

Aiming at realizing the information integration of the product green design, the paper presented the information mapping technology from CAD domain to recycling design domain.

Disassembly oriented product recycling design is one of the main content of green design and also aconcrete reflection of the strategy of sustainable development also.

It realized the numerical simulation for packing process and shrinking calculation by numerical methods.

The problem of fixing the tolling year of the toll road is a hot topic recently after toll-by-weight,the expressions of tolling year at present tolling system and its disadvantage when fixing the tolling year after toll-by-load are introduced.

This paper introduces the meaning of toll-by-weight of open highway,analyzes all influence factors to toll-by-weight of open highway.

It will provide reference for crafts to bring forward problems and their solving measures in toll by weight based on experience in these years.

The road freight vehicle toll by weight is a charge pattern reformation on charge road in China,it is more fair and rational than the charge way by vehicle type classification.

Research of determinants of audit fees based on the influence of industries;

A Test of the Free Cash Flow Hypothesis: Audit Fees Perspective;

The Determinants of Audit Fees: Evidence From the China s Listed Companies in 2001—2003;