在管道内流动的液体有两种流动状态，即层流和紊流。（    ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='55256' and id < 3492500 and id<>'3492500' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='55256' and id > 3492500 and id<>'3492500' order by id asc limit 5