独立的UPS由整流、逆变、旁路幵关和（ ）组成。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29463' and id < 2399346 and id<>'2399346' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29463' and id > 2399346 and id<>'2399346' order by id asc limit 5