IS-95及cdma20001x数字蜂窝移动通信系统频道间隔为(),其基本频道的序号为()。
参考答案:1.23MHz;283
-Excuse me, but can you tell me which road I should take to the post office?
-______ of the four roads will do.[ ]
A. Any
B. Neither
C. Both
D. Every
电子轨距尺按准确度可以分为()几级。
A.0级
B.1级
C.2级
D.3级