初孕妇,妊娠36周,感头晕、乏力、纳差2周。血常规:红细胞3×1012/L,Hb75g/L,血细胞比容0.25,最恰当的诊断是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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