问题
填空题
宽带综合业务数字网(B-ISDN)的传输速率很高，能达到几十或几百Mbit/s，甚至达到几十或几百Gbit/s。当数据传输率超过1 Gbit/s时，一般要采用 【20】 作为传输介质。
答案
参考答案：光纤
解析： 当数据传输率超过1Gbit/s时，一般要采用光纤作为传输介质。
搜题请搜索小程序“爱下问搜题”
宽带综合业务数字网(B-ISDN)的传输速率很高，能达到几十或几百Mbit/s，甚至达到几十或几百Gbit/s。当数据传输率超过1 Gbit/s时，一般要采用 【20】 作为传输介质。
参考答案：光纤
解析： 当数据传输率超过1Gbit/s时，一般要采用光纤作为传输介质。
| 完形填空 | ||||
| A Love Note to My Mom When I was a little girl, I would often accompany you as you modeled for fashion photographers.It was years later that I finally understood what role modeling __1__ in your life.Little did I know you wer  e __2__ every penny you earned to go to __3__ school.I cannot thank you enough for __4__ you told me one autumn afternoon when I was nine.After finishing my homework, I wandered into the dining room where you were buried __5__ piles of law books.I was __6__.Why were you doing what I do-memorizing textbooks and studying for __7__ ? When you said you were in law school, I was more puzzled.I didn't know Moms __8__ be lawyers too. You smiled and said, "In life, you can do anything you want to do." As young as I was, that statement kept __9__ in my ears.I watched as you faced the __10__ of completing your studies, starting companies with Dad, while still being a __11__ and a Mom of five kids. I was exhausted just watching you __12__.With your words of wisdom in my __13__mind, I suddenly felt unlimited freedom to dream.My whole world __14__.I set out to live my life filled with __15__, seeing endless possibilities for personal and professional achievements. Your words became my motto.I __16__ found myself in the unique position of being either the first (woman doctor in Maryland Rotary) __17__ one of the few women (chief medical reporters) in my field. I gained strength every time I said, "Yes, I'll try that." Encouraged by your __18__, I have forged ahead (毅然前行) with my life's journey, less afraid to make mistakes, and __19__ meeting each challenge.You did it, and now I'm __20__ it.Sorry, got to run. So much to do, so many dreams to live. | ||||
|