承包人确需更换项目经理的，应提前（ ）书面通知监理人，并取得发包人同意。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25979' and id < 2180532 and id<>'2180532' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25979' and id > 2180532 and id<>'2180532' order by id asc limit 5