On the basis of the System Non-optimum Theory and the forewarning management principle, a frame of the forewarning management system of civil aviation transportation disasters are discussed on an airline company, concerning such aspects as the guiding ideology, work content, operation model and operation sequence etc.

This paper analyzes on the features of the college/department reference room in aspects of the collected holdings, working contents and service modes, and analyzes on the functions of librarians of the college and department reference room.

Through analyzing the main contents and features of field operation and indoor operation in digital mapping,this paper advances some problems needing attention in digital mapping work.

Expatiate on a modern enterprise system for a new requirement of internal audit and several issues to be solved in the internal audit work under the modern enterprise system,and put forward that the enterprise how to better progress internal audit work under the modern enterprise system.