急性牙髄炎疼痛的特点是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25383' and id < 2139348 and id<>'2139348' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25383' and id > 2139348 and id<>'2139348' order by id asc limit 5