静止无功补偿器为电力系统提供(    )，调节系统电压。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id < 4498622 and id<>'4498622' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id > 4498622 and id<>'4498622' order by id asc limit 5