Sunday, December 3, 2023
问题:属于用户线路的有()A、局配线架至交换机电缆B、用户引入线C、楼内暗配线D、架空电缆...
Thursday, March 14, 2024
问题:采用机械(电缆敷设机)敷设光(电)缆,必须事先清除光(电)缆路由...
Sunday, September 11, 2022
问题:一般市话杆路标准杆距定为()米,最短不短于25米,最长不得超过67米。A、40B、45C、50D、60...
Sunday, January 28, 2024
问题:当通信线与电力线接触或电力线落在地面上时,必须立即停止一切有关作业活动,方能离开现场。...
Wednesday, November 23, 2022
问题:欧姆定律反映了电路中电压、电流和()三个物理量之间的关系。...
Thursday, March 14, 2024
Thursday, March 14, 2024
问题:电缆吊线一般为7/2.2,7/2.6,7/3.0的镀锌钢绞线。...
Sunday, December 3, 2023
问题:木杆上装设避雷线可直接用卡钉钉固,卡钉间距为()mm。...
Wednesday, December 6, 2023
问题:停止送电时必须在开关处悬挂停电警示标志,有专人值守,严禁擅自送电。...
Wednesday, August 16, 2023
Sunday, September 11, 2022
Tuesday, September 13, 2022
问题:电缆出厂时,电缆两头端冒中一端为()色标记的为B端。...
Wednesday, January 31, 2024
Wednesday, August 16, 2023
问题:电缆模块型接线子接续规定:接续配线电缆芯线时,模块下层接()线。...
Sunday, January 28, 2024
问题:钢绞线拉线上把,按规定有哪几种做法()A、自缠法B、另缠法C、夹板法D、U型钢卡法...
Wednesday, October 18, 2023
问题:凡是电缆的芯线绝缘层、缆芯包带层和护套均采用高分子聚合制成的电缆称为()A、市话电缆.B、通信电缆C、全塑电缆D、高频电缆...
Tuesday, November 8, 2022
问题:0.4mm线径在20℃时单线直流电阻值为()Ω/km。A、236B、95C、148D、36.6...
Wednesday, December 6, 2023
Sunday, September 11, 2022
问题:2400对的电缆芯线线径可以是()mm。A、0.32B、0.4C、0.5D、0.7...
Wednesday, August 16, 2023