题目内容
异步电动机空载运行时,其功率因数为()。
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SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id < 2596630 and id<>'2596630' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id > 2596630 and id<>'2596630' order by id asc limit 5