试题与答案

人类辅助生殖技术的应用应当在医疗机构中进行,以____目的,并符合国家计划生育政策、

题型:单项选择题

题目:

人类辅助生殖技术的应用应当在医疗机构中进行,以____目的,并符合国家计划生育政策、伦理原则和有关法律规定。()

A.盈利

B.医疗

C.治疗

D.诊断

答案:

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答案:C题目分析:当物块恰好被水平抛出时,在皮带上最高点时由重力提供向心力,则由牛顿第二定律得:,解得设此时皮带转速为n,则有,得到故选C,点评:本题运用牛顿第二定律和圆周运动规律分析临界速度问题.当...

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