三相变压器的联接级别为Y，dll，其中“d”表示变压器的（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69469' and id < 4498929 and id<>'4498929' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69469' and id > 4498929 and id<>'4498929' order by id asc limit 5