In or der to e nsur e normal teachi ng or der, prote cting st ude nts ' he althy growt h, ensuri ng that national (property) is not l ost, to prevent or minimize t he occurrence of safety accidents, foll ow t he "prevent, re scue ea ch other, ensure safety and re duce losses" pri nci ple, a ccordi ng to the local conditi ons, make t he manageme nt system. 1, t he pri nci pal is t he responsi bilit