当装配式预应力简支梁的长度为（ ）以上时，应验算裸梁的稳定性。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id < 2192941 and id<>'2192941' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id > 2192941 and id<>'2192941' order by id asc limit 5