下列不属于课程表的安排应遵循的原则是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31411' and id < 2518311 and id<>'2518311' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31411' and id > 2518311 and id<>'2518311' order by id asc limit 5