按照我国规定，凡是X。/X,（    ）的都属于大接地电流系统

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69517' and id < 4503646 and id<>'4503646' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69517' and id > 4503646 and id<>'4503646' order by id asc limit 5