我国电视开路传播中的电视频道信号通常利用电磁波谱中的甚高频和超高频,其中使用的VHF频段的频率范围为
A.45—250兆赫
B.245一380兆赫
C.325—480兆赫
D.470—960兆赫
正确答案是A
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