采用三段式电流保护的多级供电线路中,为保证选择性,定时限过电流保护的动作时限应按阶梯原则整定,越靠近电源其动作时限越长。( )
发布时间:2026-01-24
A.正确
B.错误
试卷相关题目
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69481' and id < 4500267 and id<>'4500267' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69481' and id > 4500267 and id<>'4500267' order by id asc limit 5
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