急性胎儿窘迫最常发生的时期为（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25970' and id < 2178656 and id<>'2178656' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25970' and id > 2178656 and id<>'2178656' order by id asc limit 5