Adcock型测向天线体系的H型天线通常用于（）波段测向。
A.超短波
B.短波
C.微波
D.长波
参考答案：A
I will pay _______ I can afford for the present.
A what I think B what do I think C when I think D when do I think
外胚层发育不良
A.萌牙延迟
B.牙排列紊乱
C.缺牙
D.牙稀
E.龋齿
