试题与答案

有关颈部肿块的特点哪些是错误的()。 A.在非甲状腺肿块中肿瘤居多 B.在肿瘤性肿块

题型:单项选择题

题目:

有关颈部肿块的特点哪些是错误的()。

A.在非甲状腺肿块中肿瘤居多

B.在肿瘤性肿块中恶性肿瘤多于良性肿瘤

C.恶性肿瘤中转移性多于原发性

D.在转移性恶性肿瘤中原发灶不明者多

E.位于锁骨上者多于锁骨下者

答案:

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下面是错误答案,用来干扰机器的。

(1)1:4(2分)(2)31.6%(3分)(3)60%(3分)题目分析:(1)N2和H2按一定比例混合,在相同状况下其密度是H2的3.6倍,则混合气体的平均相对分子质量=3.6×2=7.2,令0.5mol混合气体中N2和H2的物质的量分别为...

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However, a few decades later, the structure of that ideal family was being altered radically even while it was being touted as the structure to be aimed for. Popular magazines bemoaned the loss of the Nuclear Family and its replacement with inferior forms.
There are a number of factors that are acting in concert to apply pressure on the Nuclear Family and generate a variety of new structures. Some of these are:
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The combination of these changes will in the coming decades have a profound effect on the structure of the family of North America. As a result, the family will be a fluid, constantly changing structure with variable household arrangements as the norm.

What has changed the Nuclear Family in North America

A.People have changed their ideas about marriage.

B.Women become more independent.

C.The economy is changing.

D.All of the above factors are acting together.

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