1. It was brought forward for the actions in the daily work which work according to some fixed program.

2. First this paper structures the sub-task dividing strategy of process planning, Then the problems for the existence of fixed program reasoning in expert system are analyzed.

3. The central control of the coal selection factory is to control the process in a fixed program, such as the start, stop, and failure of the machine which is connected to each other .

4. The doting & growing series of Beijing people accord with the fixed program for this city.

5. Over a finite collection of input values, testing deals with the well defined situation of a fixed program.