电调天线在增大天线下倾角度过程中，天线方向图基本保持不变。而机械天线在增大天线下倾角度过程中，天线方向图会随着下倾角的增大而产生一定程度的改变。
参考答案：对
Though it was raining hard outside, we could see ______ people in the street. [ ]
A. few
B. a few
C. a little
标准横断面图
