Saturday, September 17, 2022
Thursday, September 15, 2022
问题:光纤通信上使用最多的两个长波长工作窗口主要有,即:、。...
Saturday, September 17, 2022
Saturday, September 17, 2022
Thursday, September 15, 2022
问题:代维公司应以()为单位制定代维片区域的维护作业计划...
Saturday, September 17, 2022
Thursday, September 15, 2022
问题:室外无线直放站安装时,需对整个系统的那些位置做接地()。...
Saturday, September 17, 2022
Thursday, September 15, 2022
问题:利用电感具有( )的特点,在整流电路的负载回路中串联电感起滤...
Thursday, September 15, 2022
Saturday, September 17, 2022
问题:高频机较工频机相比,有以下哪些优点A、体积小重量轻B、输入功率因数高C、输入谐波分量小D、可有效屏蔽电网侧的扰动可能对负载造成干扰...
Friday, November 11, 2022
Saturday, September 17, 2022
问题:GPON系统中,OLT通过()管理维护通道对终端设备进行配置和维...
Thursday, September 15, 2022
问题: 一套网元层是管理系统NetNumemT31在高配置下最大可...
Thursday, September 15, 2022
Sunday, September 11, 2022
问题:常用的G.652光纤,在1550nm传输窗口,典型的每公里衰减系数为多少? A、0.5dB/kmB、0.27dB/kmC、0.35dB/kmD、0.37dB/km...
Sunday, October 29, 2023
Thursday, September 15, 2022
问题:降压电力变压器连接组别的标号为“D,yn11”,它表示()。...
Friday, September 16, 2022
问题:代维信息化平台以( )为单位统一规划、统一建设。...
Friday, September 16, 2022