当以传输信号的载波频率的不同划分来建立多址接入时,称为(频分多址方式)。
参考答案:对
—Do you think it wise for Chinese mothers to try to do everything for their children?
—No, that’s _____ they are mistaken.[ ]
A. where
B. when
C. in which
D. what
某分部工程双代号时标网络计划如下图所示,关键工作有()。
A.工作A
B.工作B
C.工作C
D.工作E
E.工作F