在齿轮传动中，工作时产生轴向力的齿轮是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id < 2124449 and id<>'2124449' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id > 2124449 and id<>'2124449' order by id asc limit 5