柔性管道工程施工质量控制的关键是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26167' and id < 2192721 and id<>'2192721' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26167' and id > 2192721 and id<>'2192721' order by id asc limit 5