对于中性点可能接地或不接地的变压器，应装设（   ）接地保护。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id < 4503740 and id<>'4503740' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id > 4503740 and id<>'4503740' order by id asc limit 5