俗称的0.7米业余波段的频率范围以及业余业务和卫星业余业务的使用状态分别为:
B
暂无解析
Australia,whichisoneoftheworld'sdevelopedcountries,hasbecomerichthrough________.
OppositionleaderswillbewatchingcarefullytoseehowthePrimeMinister________thecrisis.
Thestudentsarerequiredto________themainideasofthearticleintheirownwords.