粒料桩对地基有置换、挤密和（    ）作用。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='58836' and id < 3724475 and id<>'3724475' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='58836' and id > 3724475 and id<>'3724475' order by id asc limit 5