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【简答题】
在21个国家中，调查了1950年至1960年和1960年至1970年的心脏病死亡率，并分析了心脏病与该国家1971年口服避孕药使用情况的关系.校正这些国家的年龄差别后，表明口服避孕药越多的国家心脏病死亡率越高。该研究可能是 A. 病例群研究 B.生态学研究 C.回顾性研究 D.研究 E.上述答案都不是
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参考答案：
举一反三
【单选题】Which of the following explains the “sandwich effect” in a presentation?
A.
Like in a sandwich, the most important thing in a presentation is the middle part.
B.
A presentation begins and ends with the same idea which is well developed in the body.
C.
As there are three parts in a sandwich, there are opening, body and closing in a presentation.
D.
Opening and closing contain the same elements.
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【单选题】3G中IMT-2000地面无线接口的标准IMT-2000CDMATDD对应于下列哪个系统（）
A.
WCDMA
B.
cdma2000
C.
TD—SCDMA
D.
DECT
查看完整题目与答案
【单选题】IMT-2000地面无线接口的标准IMT-2000CDMA MC对应于下列哪个系统
A.
WCDMA
B.
cdma2000
C.
TD-SCDMA
D.
UWC-136
查看完整题目与答案
【单选题】What should you do in a presentation ?
A.
Swing your body from side to side.
B.
Use your finger as a pointer.
C.
Prepare a colorful PPT to catch your audience’s attention.
D.
Put a lot of text in your PPT.
查看完整题目与答案
【判断题】在SketchUp中，删除组件内的其中任何一个对象，整个组件的所有对象将被全部删除。
A.
正确
B.
错误
查看完整题目与答案
【单选题】How would signalling language help in a presentation?
A.
To help your audience to follow your trend of thought.
B.
To advocate your opinion of the topic.
C.
To clearly explain the visual part of a presentation.
查看完整题目与答案
【单选题】IMT-2000地面无线接口的标准IMT-2000CDMADS对应于下列哪个系统（）
A.
WCDMA
B.
cdma2000
C.
TD—SCDMA
D.
UWC—136
查看完整题目与答案
【判断题】在SKETCHUP 8中，删除组件内的其中任何一个对象，整个组件的所有对象将被全部删除
A.
正确
B.
错误
查看完整题目与答案
【单选题】Why does a story or a joke sometimes flop in a presentation according to the lecturer?
A.
Because it is a bad story or an example.
B.
Because it is not proper to tell a story or a joke in a presentation.
C.
Because the culture backgrounds of the audience are different.
查看完整题目与答案
【单选题】Why does a story or a joke sometimes flop in a presentation according to the lecturer?
A.
Because the culture backgrounds of the audience are different.
B.
Because it's not proper to tell a story or a joke in a presentation.
C.
Because the story or the joke isn't given clearly.
查看完整题目与答案
相关题目：
【单选题】Which of the following explains the “sandwich effect” in a presentation?
A.
Like in a sandwich, the most important thing in a presentation is the middle part.
B.
A presentation begins and ends with the same idea which is well developed in the body.
C.
As there are three parts in a sandwich, there are opening, body and closing in a presentation.
D.
Opening and closing contain the same elements.
查看完整题目与答案
【单选题】3G中IMT-2000地面无线接口的标准IMT-2000CDMATDD对应于下列哪个系统（）
A.
WCDMA
B.
cdma2000
C.
TD—SCDMA
D.
DECT
查看完整题目与答案
【单选题】IMT-2000地面无线接口的标准IMT-2000CDMA MC对应于下列哪个系统
A.
WCDMA
B.
cdma2000
C.
TD-SCDMA
D.
UWC-136
查看完整题目与答案
【单选题】What should you do in a presentation ?
A.
Swing your body from side to side.
B.
Use your finger as a pointer.
C.
Prepare a colorful PPT to catch your audience’s attention.
D.
Put a lot of text in your PPT.
查看完整题目与答案
【判断题】在SketchUp中，删除组件内的其中任何一个对象，整个组件的所有对象将被全部删除。
A.
正确
B.
错误
查看完整题目与答案
【单选题】How would signalling language help in a presentation?
A.
To help your audience to follow your trend of thought.
B.
To advocate your opinion of the topic.
C.
To clearly explain the visual part of a presentation.
查看完整题目与答案
【单选题】IMT-2000地面无线接口的标准IMT-2000CDMADS对应于下列哪个系统（）
A.
WCDMA
B.
cdma2000
C.
TD—SCDMA
D.
UWC—136
查看完整题目与答案
【判断题】在SKETCHUP 8中，删除组件内的其中任何一个对象，整个组件的所有对象将被全部删除
A.
正确
B.
错误
查看完整题目与答案
【单选题】Why does a story or a joke sometimes flop in a presentation according to the lecturer?
A.
Because it is a bad story or an example.
B.
Because it is not proper to tell a story or a joke in a presentation.
C.
Because the culture backgrounds of the audience are different.
查看完整题目与答案
【单选题】Why does a story or a joke sometimes flop in a presentation according to the lecturer?
A.
Because the culture backgrounds of the audience are different.
B.
Because it's not proper to tell a story or a joke in a presentation.
C.
Because the story or the joke isn't given clearly.
查看完整题目与答案
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