电调天线的特殊施工要求:控制线必须安装(),且必须单独接地。...
Saturday, September 17, 2022
电力电池机房设备布置应符合下列要求:配电屏及各种换流设备的正面之...
Saturday, September 17, 2022
Saturday, September 17, 2022
根据《SDH长途光缆传输系统工程设计规范》,传输系统组织与局站设...
Saturday, September 17, 2022
铜鼻子必须经过镀锡处理后方可与设备端子相连.螺栓穿向应由内向外、...
Saturday, September 17, 2022
根据《SDH本地网光缆传输工程设计规范》,机房内走线架可按区域安装,但应满足工程()需要.A、近期B、长远C、正常D、工作...
Monday, January 2, 2023
在设备通电前检验时,关于布线和接线下列哪些情况是不正确的()。...
Saturday, September 17, 2022
Sunday, September 11, 2022
铁塔上架设的波导馈线、同轴电缆金属外护层应分别做()处接地,当馈...
Saturday, September 17, 2022
Saturday, September 17, 2022
根据《GB50312-2007综合布线工程验收规范》,综合布线系...
Saturday, September 17, 2022
根据《SDH长途光缆传输系统工程验收规范》(YD/T5044—2...
Saturday, September 17, 2022
根据《长途光缆波分复用(WDM)传输系统工程验收规范》,光跳线余...
Saturday, September 17, 2022
高度按照施工图设计要求,施工图未要求高度时,列槽道和列走线架的梁...
Saturday, September 17, 2022
Sunday, September 11, 2022
移动通信基站的防雷与接地必须建立在独立接地、均压等电位分区保护的...
Saturday, September 17, 2022
Saturday, September 17, 2022
根据《YDT 5144-2007自动交换光网络(ASON)工程设...
Saturday, September 17, 2022
Saturday, September 17, 2022