采用平板振动器进行振捣时，混凝土分层振捣的最大厚度是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id < 2192863 and id<>'2192863' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26169' and id > 2192863 and id<>'2192863' order by id asc limit 5