在寿命表中,平均期望寿命表示为()

A . ['https://assets.asklib.com/psource/2016100916481383700.gif B .https://assets.asklib.com/psource/2016100916481959772.gif C .https://assets.asklib.com/psource/2016100916482311220.gif D .https://assets.asklib.com/psource/2016100916482892941.gif E .https://assets.asklib.com/psource/2016100916483278604.gif

时间:2022-10-03 21:26:55 所属题库:预防医学科题库

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