塔盘密封件一般采用石棉绳作填料，其直径为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24909' and id < 2125139 and id<>'2125139' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24909' and id > 2125139 and id<>'2125139' order by id asc limit 5