题目内容
变压器在空载的时候,匝数比等于电压比。( )
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id < 4421643 and id<>'4421643' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id > 4421643 and id<>'4421643' order by id asc limit 5