(    )是指：全厂并列发电机可用发电总容量与当时实际发电容量之差。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id < 4498507 and id<>'4498507' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id > 4498507 and id<>'4498507' order by id asc limit 5