采用六氟化硫(SF₆)   断路器及封闭组合电器(GIS)  时，必须设置旁路设施。(   )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id < 4503972 and id<>'4503972' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id > 4503972 and id<>'4503972' order by id asc limit 5