GPRS中Gr接口是SGSN与哪个网元之间的接口()。A、HLRB、MSCC、BSCD、GGSN...
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架空线路维护工作包括()。A、整理、添补缺损的挂钩,清除线路上和吊线上的杂物B、检查光缆外护套及有无异常C、查看标石附近有无杂草、动土等D、检查架空线路接头盒和预留处是否可靠...
Saturday, October 21, 2023
Wednesday, September 27, 2023
统一资源定位器http://www.ceiaec.org/ind...
Monday, September 12, 2022
Monday, September 12, 2022
在移动通信系统中,相邻小区不允许使用相同频率,否则会产生同频干扰。...
Saturday, May 4, 2024
Monday, September 12, 2022
关于主天馈系统天线的正确说法是()。A、接收、放大、发射CDMA信号B、接收、放大CDMA信号C、接收、发射CDMA信号D、放大、发射CDMA信号...
Friday, April 19, 2024
“创无限通信世界,做信息社会栋梁”,是中国移动通信的()...
Tuesday, April 18, 2023
Tuesday, January 31, 2023
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
管道人孔内光缆接头,及余留光缆的安装方式,应根据光缆接头盒的不同...
Monday, September 12, 2022
接地体外露检查时,要观察机房周围()米半径范围内地网是否有裸露。...
Monday, September 12, 2022
发电机的额定电压比电网电压高()是考虑到负荷电流导致在线路上产生...
Thursday, September 15, 2022
在光时域仪测量光纤损耗的波形中,“初始脉冲”是由什么因素引起的(...
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022