电子胎心监护仪无应激试验的时间一般为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30904' and id < 2486545 and id<>'2486545' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30904' and id > 2486545 and id<>'2486545' order by id asc limit 5