In or der to ensure normal tea ching or der, prote cting st ude nts ' healthy gr owth, ensuring t hat nati onal (property) is not lost , to prevent or minimize t he occurre nce of safety accide nts, foll ow the "prevent, rescue ea ch other, e nsure safety and re duce losses" principle , accor ding t o the l oca l condi tions, make t he ma nagement sy stem. 1, t he pri ncipal is the re sponsibilit