.同步发电机机端发生突然三相短路时，下述哪些电流分量不会随时间衰减至0？（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69496' and id < 4501879 and id<>'4501879' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69496' and id > 4501879 and id<>'4501879' order by id asc limit 5