Results and Conclusions The validation of workshops should include four aspects,such as pre-qualification,installation qualification(IQ),operational qualification(OQ)and performance qualification(PQ).

This paper introduced qualitative judgment methods of hot air circulation oven,design qualification (DQ), installation qualification (IQ), operational qualification (OQ), performance qualification (PQ).

Determination of major fire potential is a kind of administrative confirmation by public security institutions for fire control.

Building property right registration which has an important influence on civil activity belongs to administrative confirmation not administrative permission in nature.

For instance,"recognizing the specific administrative action" should be understood as administrative affirmation and adjudication;"has been made in accordance with the law" .

As an important means of modern administration, administrative affirmation, being significance in administrative action theory and practice, can prevent and refrain from social conflicts.

The legal system of administrative affirmation has the function to prevent and refrain the dispute on the affirmation of legal relation, legal position and legal facts between or among the private parties, and has play a i.