二次设备相互连接而成的电路称为二次路。（  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id < 4500409 and id<>'4500409' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id > 4500409 and id<>'4500409' order by id asc limit 5