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1、课程名称：20年至20年第学期班级：教学单元（章节）：第一章电气安全技术基础目的要求：通过本章节内容学习，使学生掌握基本的安全用电常识，建立安全用电的基本概念，为今后的专业知识学习和技能训练打好基础。知识要点：1、电气系统对人身安全和设备安全构成影响的主要因素；2、触电事故的种类、原因、形式等。技能要点：1、具备电气系统的电气安全技术措施；2、具备电气系统的接地、接零等基本实施方式技术。教学步骤：首先介绍安全用电基本知识，强调其重要性，然受介绍电气系统的接地、接零的基本原理、作用等。教具及教学手段：板书、实例教学作业布置情况：P152、8
2、、9、10、11课后分析与小结：school)],44housebuildingaswellasmorethan1000copiesofbooks,morethan10kindsofcollectionofnewspapersandmagazines,firesburntdown.In1938,theJapaneselearnedthatthenationalGovernmentestablishedinXITangTombrotten"clip"taxes,taxofficerslivein8ofYanDongvillagefarmer
3、shome,troopsatnight,Yaowasburnedseveralhouses.1938newmorningofSeptember18,theJapaneseteamwenttothecountryside"sweep"fromthekaiyangvillagelinetoTungYangJiaQiaoyanTemplewallandmetYangJia溇ZhouDana(male)weeksbecauseoflong-termillnessandcan'tworkinthefields,theJapaneseseehisfa
4、cefromscratchwithoutcalluses,regardhimas"Shina",thrustaknifeatthesceneofhisdeath.Thebodywasstabbed7times,wound13.Thesameday,TrangbangvillageheardtheJapanesecometo"mop-up"arehiding,motherof9ZhouGuanbaoZhangAyingtodrilla"drymound",wasdiscoveredbytheJapanese,ashotintheend.Th
5、esameday,is7zhouhaijiangzhigrandfatherZhouYingbaotoescapetheJapanesearmy,wasfoundontheroad,ashotintheend.InMarch1939,theJapanesearmyinYanTombraiding,hasarrested16people,infengqiaocigarettesthismorningbang,killing11peopleontheRiver,Eastmeetingpointinwoodqiaotuintheafternoo
6、nkilling4peopleontheRiverside.GuTongisaJapanesegospeaktheShanghaidialect,latertobecalledGuTongas"killleft."OnJanuary18,1943,theelves,fivethousandorsixthousand,waterandlandgohandinhand"mop-up"jiaxingareawestoftherailway,YanTombareafall.March6,NiuShan(CountyGovernmentIIsect
7、ionchief)carryingitschildNiuJun(strictTombseventhdistrictChang)andtheDistrictAssistantYuXuchu,andplayersJinFuqin,andShenBaosheng,sixpeoplereceivedWujiangundergroundCountyGovernmentnotification第页教学内容板书或旁注第一章电气安全技术基础1.1用电安全概述一．人身安全1.电流大小（1）感觉电流（2）摆脱电流（3）致命电流2.频率40Hz~60Hz的交流
8、电对人最危险。频率越高，危险性降低。高频电流治病的例子：医用高频设备，高频治疗仪，高频手术刀，颈椎康复治疗仪。3.通电时间通电时间t长，人体电阻降，通过人体的电流增，危险性增。4.电流路径经过
