母联兼旁路教学资料.doc

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1、精品好文档，推荐学习交流1、母联兼旁路下图为母联兼旁路（II母带旁路）的一次主接线示意图，I母带旁路与之类似。正常情况下，Lk两侧刀闸I、II都合上，Lk作母联用。在母联I刀闸断开，II刀闸和跨条刀闸合上时，母联开关作旁路用。母联兼旁路单元定义在LK单元，TA极性同II母上单元。若以II母带旁路，要求母联TA装于I母侧。若以I母带旁路，要求母联TA装于II母侧。若I、II母都可能带旁路，建议母联断路器两侧都要装设TA。人教版英语选修7课文人教版英语选修七原文　　人教版英语选修7课文人教版英语选修七原文 　　Unit1Livingwel

2、l 　　Hi,mynameisMartyFieldingandIguessyoucouldsaythatIam“oneinamillion.”Inotherwords,therearenotmanypeoplelikeme.Yousee,Ihaveamusclediseasewhichmakesmeveryweak,soIcan’trunorclimbstairsasquicklyasotherpeople.Inaddition,sometimesIamveryclumsyanddropthingsorbumpintofurnitur

3、e.Unfortunately,thedoctorsdon’tknowhowtomakemebetter,butIamveryoutgoingandhavelearnedtoadapttomydisability.Mymottois:liveonedayatatime. 　　UntilIwastenyearsoldIwasthesameaseveryoneelse.Iusedtoclimbtrees,swimandplayfootball.Infact,Iused仅供学习与交流，如有侵权请联系网站删除谢谢2精品好文档，推荐学习交流to

4、dreamaboutplayingprofessionalfootballandpossiblyrepresentingmycountryintheWorldCup.ThenIstartedtogetweakerandweaker,untilIcouldonlyenjoyfootballfromabenchatthestadium.IntheendIwentintohospitalformedicaltests.Istayedtherefornearlythreemonths.IthinkIhadatleastabilliontest

5、s,includingoneinwhichtheycutoutapieceofmusclefrommylegandlookedatitunderamicroscope.Evenafterallthat,noonecouldgivemydisease仅供学习与交流，如有侵权请联系网站删除谢谢2