()的结构件应选用钢材或其他适合的金属结构材料制造，其结构应具有足够的 强度和刚度。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25762' and id < 2165920 and id<>'2165920' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25762' and id > 2165920 and id<>'2165920' order by id asc limit 5