某女婴出生时,Apgar氏评分9分,身体健康,出生5天查体时发现阴道有白带及少量血性分泌物似月经样,这种现象是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧