Answer: the use of annual account menu empty annual data function.

答：使用年度账菜单清空年度数据的功能。

Q: why annual account menu is set ash can not be used?

问：为何年度账菜单是置灰不能使用？

The second part gives an overview of annual account effect study.

第二章是和年报效应研究相关的理论和文献综述。