题型:问答题 论述题 — I find it astonishing that John ____ be so rude to me.— Not astonishing at all. He is always rude to others.A.should B.mustC.mightD.ought to 查看答案
题型:问答题 论述题 在无噪声情况下,若某通信链路的带宽为3KHz,采用4个相位,每个相位具有4种振幅的QAM调制技术,则该通信链路的最大数据传输速率是______。A.12 Kbps B.24 Kbps C.48 Kbps D.96 Kbps 查看答案