SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68459' and id < 4419698 and id<>'4419698' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68459' and id > 4419698 and id<>'4419698' order by id asc limit 5
型等值电路中，可变损耗包括（ ）。