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When there’s a fire alarm or explode, people will gather around the scene of accident to see what is happening without knowing that danger may be around them. When they think they are in the safe place, some inflammables and explosives may be hidden in the fire and there may come a second explosion and hurt people.Also, they may hinder.
Guangdong University of Technology
GUANGZHOU, China
YUE WEN,
Guangdong University of Technology
Shumei Huang,
Guangdong University of Technology
Yikun Zhang,
Guangdong University of Technology
Yufeng Su,
Guangdong University of Technology