Check which words are used before rectification.

1. Examination: it refers to the careful examination and analysis of problems, so as to find out the root causes of problems and take corresponding measures.

2. Inspection work: refers to a comprehensive, systematic and meticulous inspection of the work, to find out the problems and deficiencies in the work, and to propose improvement measures.

3. Self-examination: refers to self-examination and reflection to find out your own shortcomings and deficiencies in order to better improve yourself and improve yourself.