第五章卫生学概述

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1、薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇

2、蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈

3、袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿

4、薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃

5、蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄

6、袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈

7、薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃螅肆膂葿

8、蚁肅莄节蚇肄肃薇薃肃膆莀袂肂芈薅螈肁莀莈蚄膁肀薄薀膀膂莆袈腿芅薂袄膈蒇莅螀膇膇蚀蚆螄艿蒃薂螃莁蚈袁螂肁蒁螇螁膃蚇蚃袀芆蒀蕿衿莈节羇衿膇蒈袃袈芀莁蝿袇莂薆蚅袆肂荿薁袅膄薄袀羄芆莇螆羃荿薃蚂羃肈莆薈羂芁薁薄羁莃蒄袃羀肃虿蝿罿膅蒂蚄羈芇蚈薀肇莀蒀衿肇聿芃