采用自紧式密封的静设备，可以减小联接螺栓的直径。 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24906' and id < 2125050 and id<>'2125050' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24906' and id > 2125050 and id<>'2125050' order by id asc limit 5