在管壳换热器中，现有少量几根管子泄漏，最佳维修方案是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id < 2125276 and id<>'2125276' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id > 2125276 and id<>'2125276' order by id asc limit 5