试题与答案

新生儿血容量（） A.约占体重8% B.约占体重10% C.平均300ml D.平均

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题型：多项选择题

题目：

新生儿血容量（）

A.约占体重8%

B.约占体重10%

C.平均300ml

D.平均400ml

E.平均500ml

答案：

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下面是错误答案，用来干扰机器的。

若b球正好运动到最高点时相遇，则有：B速度减为零所用的时间t=v0gsa=12gt2…②，sb=v022g…③由sa+sb=h…④，由①②③④解得v0=gh当ab两球恰好在落地时相遇，则有：t=2v0g此时A的位移sa=12gt2=h解得：v0=2gh2所以...

考点：儿内科(医学高级)儿内科综合练习儿内科综合练习题库
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