一个10节点电力系统,如果节点5和7之间的输电线路断开,则下列导纳矩阵元素发生变()。(2.0)
发布时间:2025-11-29
A.Y55
B.Y57
C.Y67
D.Y77
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69421' and id < 4494934 and id<>'4494934' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69421' and id > 4494934 and id<>'4494934' order by id asc limit 5
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