链传动能保证准确的平均传动比，传动功率较大。 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24894' and id < 2124506 and id<>'2124506' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24894' and id > 2124506 and id<>'2124506' order by id asc limit 5