按照对电网影响的程度，告瞥信号分为（ ）级。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29464' and id < 2399261 and id<>'2399261' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29464' and id > 2399261 and id<>'2399261' order by id asc limit 5