埋入地中的金属接地体称为接地装置，其作用是降低接地电阻。(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69523' and id < 4504213 and id<>'4504213' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69523' and id > 4504213 and id<>'4504213' order by id asc limit 5