装设于（   ）的配电变压器应设有安全围栏，并悬挂“止步，高压危险！”等标示牌。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69528' and id < 4504896 and id<>'4504896' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69528' and id > 4504896 and id<>'4504896' order by id asc limit 5