[多选题]长期过负荷运行,对电气设备影响( )。(每题0.5分)(2.2)
发布时间:2025-11-29
A.绝缘材料绝缘性能降低
B.金属材料机械强度下降;
C.导体接触部分的接触电阻增加
D.无影响.
试卷相关题目
-
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69426' and id < 4495760 and id<>'4495760' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69426' and id > 4495760 and id<>'4495760' order by id asc limit 5
湘公网安备:43011102000856号 
