位置公差中平行度符号是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24885' and id < 2124106 and id<>'2124106' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24885' and id > 2124106 and id<>'2124106' order by id asc limit 5