In or der to e nsure normal tea chi ng or der, pr otecti ng student s ' healt hy growth, ensuring t hat nati onal (pr operty) is not lost, t o preve nt or minimi ze the occurre nce of saf ety acci dents, follow the "preve nt, rescue each other, ensure safety and re duce losse s" principle, a ccordi ng to the local conditions, make t he manageme nt system. 1, the pri nci pal is t he responsi bility