异步电动机转子上串电阻后机械特性变软。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69401' and id < 4493368 and id<>'4493368' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69401' and id > 4493368 and id<>'4493368' order by id asc limit 5