近代警察与古代警察都有专门的统一的制式服装。( )
参考答案：错
解析：近代警察有统一的制式服装，古代警察则没有专门的服装。
I was just talking excitedly _____ Jason cut in, _____ made me quite annoyed. [ ]
A. when / it
B. while / which
C. while / it
D. when / which
UE的通信过程中需要保持上行同步，上行同步的保持是利用上行突发中的（）来实现的
A.upptS
B.MidAmble
C.dwptS
D.SS
