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3[多选题]
正弦波可以用(  )参量来描述


A.振幅

B.频率


C.相位


D.误码率


E.误信率

  积分
 参考答案:
 佳题速递:
  • 6[单选题] 下列说法正确的是( ) A.黄色光只能是从光谱分解出来的单色光 B.没有光就看不到物体的颜色 C.紫光的波长比红光的波长大一些 D.无正确答案色彩构成
  • 日本“元禄文学”的代表作家有: “浮世草子”的作者井原西鹤、“净琉璃”脚本的作者近松门左卫门、“俳谐”的作者松尾芭蕉。外国文学史
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  • 在Word编辑的内容中,文字下面有红色波浪下划线的表示_____。 计算机应用基础
  • 2[阅读题]      There are some things about myself that I really like. First of all, I always make an effort to do my best. I never give up halfway without trying my best. For example, have practiced the piano for more than twelve years. And now I am learning English every day.    Secondly,I'm good at making people laugh. I feel happy when people smile a the things I do. I make friends with anyone easily and now I have a lot of friends.    Of course, I also have my weak points. I sometimes feel that I'm a bit selfish or careless. I want to overcome these faults and I believe this will make a man of me and people will love me better.21. What is NOT the author's character?                                  A. Always trying his bestB. Giving up halfway.C. Being good at making people laugh.D. Making friends easily.22. He has practiced the piano for____ ___.                                A. less than twelve years                   B. twelve yearsC. almost twelve years                      D. over twelve years23. He is now trying to       every day.                                 A. play the piano                             B. learn EnglishC. make friends                               D. overcome his faults24. He is now trying to overcome the fault of.                              A. making people laugh                   B. making too many friends beingC. being selfish or careless                D. being too proud or particular25. He feels       when people smile at the things he does.                   A. happy                                         B. angryC. selfish                                          D. careless 英语 C(二)
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