接收开路电视信号一般用()天线A、引向天线B、鼠笼天线C、抛物面天线D、风筝天线...
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目前世界上最常用的MPEG-2标准MP@ML,节目提供者可以提供...
Thursday, September 15, 2022
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GY/T200.1/2-2004《HFC网络数据传输系统技术规范...
Saturday, September 17, 2022
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Saturday, September 17, 2022
Saturday, September 17, 2022
()和()是用来把一路信号分成多路,并进而分配给不同用户的无源器件。...
Saturday, September 16, 2023
Sunday, September 11, 2022
分配器可以用作混合器来使用,它属于()混合方式,而对频率无选择性...
Saturday, September 17, 2022
电视亮度信号的频谱是以行频为间距的梳齿状结构,且亮度信号的主要能...
Thursday, September 15, 2022
DOCSIS的下行信道带宽为()MHz,Euro DOCSIS的...
Saturday, September 17, 2022
Saturday, September 16, 2023
下面哪个缩写代表CM发送DHCP Discover信息?()...
Saturday, September 17, 2022
卫星电视接收,在C波段的频率范围是().A、1000MHz以上B、2000MHz-3000MHzC、3.7-4.2GHz...
Sunday, January 1, 2023
Thursday, September 15, 2022