无限大电源供电情况下发生三相短路时，短路电流的特点是周期分量电流不衰减。(    )

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id < 4421620 and id<>'4421620' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id > 4421620 and id<>'4421620' order by id asc limit 5