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This paper analyzes what kinds of fire extinguishers should be selected in the allocation of fire extinguishers in university library.
1. Libraries and archives are seriously dangerous places and should be equipped with 3A-class fire extinguishers.

2. Dry powder ABC fire extinguishers can be used in general places, and clean gas fire extinguishers such as heptafluoropropane gas fire extinguishers and lG54 1 fire extinguishers can be used in important documents or places.

3. Carbon dioxide fire extinguishers should not be used in crowded places.

4. Water-based fire extinguishers should not be used in places such as stacks.

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