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百里群山繞玉帶—信陽(yáng)市南信葉線改建工程紀(jì)實(shí)
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In order to ensure normal teaching orde r, protecting students ' he althy growt h, ensuri ng that nati onal (pr operty) is not lost, t o prevent or minimize the occurr ence of safety acci de nts, follow the "preve nt, rescue ea ch ot her, ensure safety and reduce l osse s" principle , accordi ng to the local conditi ons, make the management system. 1, t he pr nci pal is the responsibility of schoo