在GPRS网络频率规划过程中，为了满足各种编码方式下数据速率的要求，（）是需要考虑的重点。
参考答案：载干比
Because the writer fell ill all of a sudden, the novel _____________ by the end of next month was put off.
A．being published
B．will be published
C．to be published
D．published
当VOR处于NCD状态时，从显示器上消失的是（）。
A.偏离杆和偏离刻度
B.只有偏离杆
C.只有偏离刻度
D.以上均不正确
