同步发电机和电网并联运行时，在下列那种情况下其稳定性较好（ ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id < 4421439 and id<>'4421439' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id > 4421439 and id<>'4421439' order by id asc limit 5