挖土前必须做好地表和坑内降排水，地下水位应保持低于开挖面至少（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24591' and id < 2110423 and id<>'2110423' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24591' and id > 2110423 and id<>'2110423' order by id asc limit 5