下面哪个因素不是人种形成的几个因素之—()。 A.生产 B.选择 C.裂谷 D.人种

题型:单项选择题

问题:

下面哪个因素不是人种形成的几个因素之—()。

A.生产

B.选择

C.裂谷

D.人种混杂

考点:生物进化论生物进化论题库
题型:单项选择题

治疗痴呆髓海不足证,应首选()

A.洗心汤

B.还少丹

C.归脾汤

D.七福饮

E.右归丸

题型:单项选择题

根据短文内容和首字母提示,填入所缺单词。

A tragic mystery happened in South-east Asia. Malaysia(马来西亚) Airlines flight 370 t 小题1: off early Saturday morning, March 8th, in 2014. It was headed from Kuala Lumpur, Malaysia to Beijing, China. There were 12 crew members and 227 passengers on board, i小题2:  154 Chinese. But less than an hour into the flight, it d 小题3:. There was no communication from the pilots and no distress calls(遇险求救信号). There was something u 小题4: about the flight. Some of the people on it weren't who they said they were. Interpol, an international police organization says at l小题5: two of the passports were stolen in the past two years. The f 小题6: thing is to find the plane. It is said that the plane may have changed course and turned 小题7: towards Kuala Lumpur. We don’t know w 小题8: exactly happened to the plane. All of us hoped it could return safely. However, 17 days l 小题9: after the accident, Malaysian Prime Minister told the world that flight MH370 ended in the southern Indian Ocean and none of those on board survived. What bad n 小题10:!

题型:单项选择题

《国务院关于深化医药卫生体制改革的意见(征求意见稿)》在网上公示后,各界人士通过信函、传真或网络邮件等方式提出了各种调整修改意见。这从一个侧面表明(   )

①我国公民具有提案权

②我国的人民民主具有真实性

③我国公民享有依法参与民主决策的权利

④我国政府坚持依法执政、科学执政

A.①②

B.②③

C.③④

D.②④

题型:单项选择题

对胸长神经损伤者体格检查时常存在的情况是()

A.休息时肩胛骨上内缘向上移位

B.对墙壁推起将加重肩胛骨内缘展起如翼状

C.肩外展时翼状肩更明显

D.翼状肩在臂的任何位置上都不会改变

E.由Ⅺ脑神经支配的肌肉无力

题型:单项选择题

用均数与标准差可全面描述下列何种资料的分布特征

A.正态分布和近似正态分布

B.正偏态分布

C.负偏态分布

D.任意分布

E.对称分布

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