在A、B两组人群中进行筛选，假定筛选试验的灵敏度和特异度是已知的，A人群患病率为10

发布时间：2017-05-19 17:14 │ 来源：www.tikuol.com

题型：单项选择题

问题：

在A、B两组人群中进行筛选，假定筛选试验的灵敏度和特异度是已知的，A人群患病率为10％，B人群为1％，则下列哪种结论是正确的（）

A.A人群阳性结果者中假阳性者所占比例低于B人群

B.A人群阳性结果者中真阳性的比例低于B人群

C.A人群中可靠性高于B人群

D.A人群中特异度低于B人群

E.A人群中灵敏度高于B人群

考点：职业卫生(医学高级)流行病学流行病学题库

题型：单项选择题

阅读理解。

     In 1896, the first modern Olympic Games were held in Athens, Greece. Since then many countries
have held Olympics, such as England, France, Germany, Canada, the USA, Spain and Australia. After
more than a century the Games return to the hometown in 2004.
     When people hold the Olympic Games, they always make an emblem (会徽). The emblem of the
Athens Olympic Games in 2004 is a white olive branches in the sky.
     Athens developed a spirit of peace. An officer said, "While in Athens, the world should be at peace."
We hope the peace is not just for a short time. We would like the message from the Athens Games to
help countries come together and solve their problems. In 2008 the Olympic Games have been held in
China. And China has already made a seal as the emblem of the Beijing 2008 Olympic Games. The emblem
has a single Chinese character on a red seal and means "Chinese seal-dancing Beijing". Below it, there
are the words "Beijing 2008". The character in the emblem is "Jing". It means "Capital" of China and it
is also like a runner or a dancer. The running figure (人形) of the emblem shows the spirit of the
Olympics-faster, higher and stronger.

1. What do people always make when they hold the Olympic Games?

A．A picture
B．An emblem
C．A flag
D．A map

2. What message does the Olympic Games want to give?

A．War
B．Luck
C．Danger
D．Peace

3. How many years passed when Athens again held the Olympic Games?

A．100
B．104
C．108
D．112

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题型：单项选择题

在下列选项中，Smith骨折是（）。

A.尺骨上1/3骨折合并桡骨小头脱位

B.桡骨上1/3骨折合并尺骨小头脱位

C.尺骨下1/3骨折合并桡骨小头脱位

D.桡骨下1/3骨折合并尺骨小头脱位

E.桡骨远端骨折

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题型：单项选择题

下列关于司来吉兰的说法，正确的有（）

A.为特异的B型单胺氧化酶抑制药（MAO-BI），中等剂量时对A型单胺氧化酶（MAO-A.无明显作用，但剂量超过10mg/d，也能抑制MAO-A

B.与左旋多巴类合用，可增强并延长其作用，减少其用量，而不会引起高血压危象等心血管严重不良反应

C.早期应用本品可以起到细胞保护作用，延缓帕金森病的发展，延缓病人必须使用左旋多巴的时间

D.在帕金森病发展后可与左旋多巴合用，也可预防或改善久用左旋多巴所引起的终末运动不能及药效消失等现象

E.神经科临床用本品和维生素E合用，以抗氧化的作用来治疗早期帕金森病，称为DATATOP方案，有成为早期帕金森病的首选药的趋势

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题型：单项选择题

下列疾病中不会出现血尿的是

A．膀胱炎
B．输尿管结石
C．肾病综合征
D．肾结核
E．膀胱肿瘤

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题型：单项选择题

测绘单位不得超越其资质等级许可的（）从事测绘活动或者以其他测绘单位的名义从事测绘活动，并不得允许其他单位以单位的名义从事测绘活动。

A.事项

B.标准

C.范围

D.规模

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