简述目前综自站中几种通信方式？并写出IEC60870-5-101、102、103、104规约适用的范畴。
参考答案：
综自站中系统数据通信，包括两方面内容：一是综自系统内部各子系统或各种功能模块间的信息交换，通过通信接口的串并行通信方式、计算机局域网方式和现场总线方式；另一是变电站与控制中心的通信，有载波通信方式、网络通信线路方式、音频电缆方式等。
IEC60870-5-101是符合调度端要求的基本远动通信规约；
IEC60870-5-104是用网络方式传输的远动规约；
IEC60870-5-102是用作电能量传送的通信规越。
它们都属于与控制中心的通信。
IEC60870-5-103是为继电保护和间隔层（IED）设备与站控层设备间的数据通信传输的规越，属于站内通信。
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| It was her giggling that drew my attention.Note taking really wasn't all that funny. Walking over to the offender, I asked for the__1__.Frozen, she refused to give it to me.I waited, all attention in the classroom on the quiet__2__between teacher and student.When she finally__3__it over she whispered, "Okay, but I didn't draw it." It was a handdrawn__4__of me, teeth blackened and the words "I'm stupid" coming out of my mouth. I managed to fold it up calmly.My mind,__5__, was working angrily as I struggled not to__6__.I figured I knew the two most likely candidates for drawing the picture.It would do them some__7__to teach them a lesson, and maybe it was high time that I did it! Thankfully, I was able to keep myself__8__. When there were about six minutes remaining, I showed the class the picture.They were all silent as I told them how__9__this was for me.I told them there must be a reason__10__and now was their chance to write down anything they needed to tell me.Then I let them write silently while I sniffed in the back of the classroom. As I__11__the notes later, many of them said something like, "I've got nothing against you," or "I'm sorry you were hurt." Some kids said, "We're__12__of you." But two notes, from the girls who I__13__ were behind the picture, had a list of issues.I was too__14__, too strict… Reading those notes, I realized that over the course of this year, instead of__15__my students, I had begun commanding them to__16__.Where I thought I was driving them to success I was__17__driving them away. I had some apologizing to do.But the next day in the classroom, one boy and one girl each handed me a card.The one__18__by all the boys expressed sincere regret for the ugly joke.The one from the girls asked for__19__. This was a lesson for both the kids and me.Forgiveness does not change the past, but it does enlarge the__20__. | |||
| ( )1．A.note ( )2．A.battle ( )3．A.took ( )4．A.statue ( )5．A.otherwise ( )6．A.leave ( )7．A.good ( )8．A.amused ( )9．A.meaningful ( )10．A.aside ( )11．A.wrote ( )12．A.proud ( )13．A.figured ( )14．A.talkative ( )15．A.forcing ( )16．A.appreciate ( )17．A.actually ( )18．A.decorated ( )19．A.thankfulness ( )20．A.friendship | B．advice B．competition B．thought B．graph B．however B．cry B．harm B．controlled B．forgetful B．above B．finished B．fond B．promised B．mean B．encouraging B．apologize B．normally B．offered B．forgiveness B．education | C．reason C．argument C．turned C．picture C．therefore C．explain C．favor C．uninterested C．regretful C．beneath C．read C．afraid C．concluded C．clumsy C．comforting C．compromise C．immediately C．signed C．compensation C．knowledge | D．help D．conversation D．handed D．poster D．besides D．argue D．punishment D．relaxed D．hurtful D．behind D．collected D．ashamed D．confirmed D．considerate D．teaching D．achieve D．generally D．bought D．communication D．future |