中性点直接接地系统配备完善的接地距离和相距距离保护,当发生单相金属性接地故障时,可以正确反应故障点到保护安装处测量阻抗是的故障回路数量是( )。
发布时间:2024-11-21
A.4
B.1
C.6
D.3
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69054' and id < 4469219 and id<>'4469219' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69054' and id > 4469219 and id<>'4469219' order by id asc limit 5