基于软交换的下一代网络是在()采用软交换设备 A.应用层 B.控制层 C.传送层 D 发布时间:2017-08-16 08:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 基于软交换的下一代网络是在()采用软交换设备A.应用层B.控制层C.传送层D.接入层
题型:单项选择题 Questions 14-23 ·Look at the ten statements for this part. ·You will hear a passage about "A Research on Sleep ". You will listen to it twice. ·Decide whetheryou think each statement is right(R), wrong(W) or not mentioned(NM). ·Mark your answers on the Answer Sheet.Muscular relaxation, temperature drop and breath regularity are characteristics of Stage 4 sleep.A.RightB.WrongC.Not Mentioned 查看答案