三相发电机绕组如下图所示，电压表V1的读数为220V，则电压表V的读数为（   ）。 

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id < 4493022 and id<>'4493022' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id > 4493022 and id<>'4493022' order by id asc limit 5