【多选题】【消耗次数:1】
()称为电力网(简称电网),是电力系统的重要组成部分。
输电系统
变电系统
发电系统
配电系统
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相关题目
【判断题】 电力系统是由发电厂、变电站、输电网、配电网和电力用户等环节组成的电能生产与利用系统。
①  正确
②  错误
【判断题】 电力系统是由发电厂、变电站、输电网、配电网和电力用户等环节组成的电能生产与利用系统。()
①  正确
②  错误
【单选题】 电力系统由:发电厂、电力网、电能用户组成。
①  正确
②  错误
【单选题】 电力系统由发电厂、输配线路、变电所及电力用户组成。
①  正确
②  错误
【单选题】 电力系统的复杂故障是指()。
①  横向故障
②  纵向故障
③  电力系统中不同地点同时发生不对称故障
【多选题】 电力系统的主体结构分为()。
①  电源
②  水电站
③  电力网
④  负荷中心
【单选题】 电力系统的稳定性是指( )。
①  系统无故障时间长短
②  两电网并列运行能力
③  系统抗干扰的能力
④  系统中电气设备利用率
【多选题】 变电站是电力网的重要组成部分,它的任务是()。
①  汇集电源
②  输送电能
③  变换电压
④  分配电能
【单选题】 对称短路是电力系统中( )短路。
①  单相
②  二相
③  三相
④  两极接地
【单选题】 电力系统的综合供电负荷加上厂用电之和,称为(  )
①  发电负荷
②  供电负荷
③  用电负荷
④  工业负荷
随机题目
【单选题】 —Can you take the day off tomorrow? —Well, I’ll have to get ____ from my boss.
①  permission
②  permit
③  allowance
④  possession
【单选题】 The house is made of wood and straw, and____to collapse in a heavy storm.
①  reliable
②  liable
③  easy
④  probable
【单选题】 ____ the water left in the kettle, the doctor put several things he unwrapped from a handkerchief.
①  At
②  To
③  Within
④  Into
【单选题】 After ____ seemed an endless wait, it was her turn to step into the doctor’s office.
①  it
②  that
③  what
④  which
【单选题】 He wrote the book in ____ with his wife.
①  proportion
②  installment
③  correspondence
④  collaboration
【单选题】 His decision was ____, since he could not see the action from where he was standing.
①  arbitrary
②  ordinary
③  casual
④  accurate
【单选题】 Operations which left patients ____ and in need of long periods of recovery time now leave them feeling relaxed and comfortable.
①  exhausted
②  unhealthy
③  upset
④  fearful
【单选题】 Mother told Rose to buy some sugar in the supermarket and_____.
①  she did so
②  so she did
③  so did she
④  she did such
【单选题】 The bank is reported in the local newspaper ____ in broad daylight yesterday.
①  to be robbed
②  robbed
③  to have been robbed
④  having been robbed
【单选题】 The thieves ____ the waste paper all over the room while they were searching for the diamond ring.
①  spread
②  scratched
③  scattered
④  burned