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【单选题】
深秋季节,空气温度高于0°C,树叶却会结霜,这主要是由于树叶通过( )散失了热量。
A.
树干的热传导
B.
与空气的对流换热
C.
树叶的呼吸作用
D.
向空中的热辐射
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举一反三
【单选题】Which is the main idea about students in the 1960s?
A.
They took part in protests.
B.
They enjoyed their time at university.
C.
They read books which were forbidden.
D.
They smoked marijuana.
查看完整题目与答案
【多选题】数据的完整性是指数据的()。
A.
准确性
B.
正确性
C.
有效性
D.
相容性
查看完整题目与答案
【单选题】Which is the main idea about students in the 1960s?
A.
They smoked marijuana.
B.
They took part in protests.
C.
They read books which were forbidden.
D.
They enjoyed their time at university.
查看完整题目与答案
【单选题】数据的完整性是指数据的正确性、有效性和
A.
可维护性
B.
独立性
C.
安全性
D.
相容性
查看完整题目与答案
【单选题】What do we call the collection of businesses and products that make up the company?
A.
business portfolio
B.
investment diversity
C.
departments
D.
needs inventory
E.
none of the above
查看完整题目与答案
【多选题】消费者信息处理过程包括
A.
接受
B.
理解
C.
暴露
D.
传递
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【单选题】一种筛检乳腺癌的实验应用于已经病理检查证实的乳腺癌病人400人和未患乳腺第400人。结果患癌组有100例阳性,未患癌组有50例阳性。则该试验的特异度为
A.
100/400
B.
350/400
C.
100/150
D.
100/300
E.
50/400
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【单选题】一种筛检乳腺癌的实验应用于已经病理检查证实的乳腺癌患者400人和未患乳腺癌400人。结果患癌组有100例阳性,未患癌组有50例阳性。该试验的灵敏度为( )
A.
100/400
B.
350/400
C.
100/150
D.
100/300
E.
350/650
查看完整题目与答案
【简答题】数据的完整性指数据的正确性、有效性、 。
查看完整题目与答案
【单选题】Which is the main idea about the students in the 1960s?
A.
They smoked marijuana.
B.
They took part in protests.
C.
They read books which were forbidden.
D.
They enjoyed their time at university.
查看完整题目与答案
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【单选题】Which is the main idea about students in the 1960s?
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They took part in protests.
B.
They enjoyed their time at university.
C.
They read books which were forbidden.
D.
They smoked marijuana.
查看完整题目与答案
【多选题】数据的完整性是指数据的()。
A.
准确性
B.
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C.
有效性
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【单选题】Which is the main idea about students in the 1960s?
A.
They smoked marijuana.
B.
They took part in protests.
C.
They read books which were forbidden.
D.
They enjoyed their time at university.
查看完整题目与答案
【单选题】数据的完整性是指数据的正确性、有效性和
A.
可维护性
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独立性
C.
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【单选题】What do we call the collection of businesses and products that make up the company?
A.
business portfolio
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investment diversity
C.
departments
D.
needs inventory
E.
none of the above
查看完整题目与答案
【多选题】消费者信息处理过程包括
A.
接受
B.
理解
C.
暴露
D.
传递
查看完整题目与答案
【单选题】一种筛检乳腺癌的实验应用于已经病理检查证实的乳腺癌病人400人和未患乳腺第400人。结果患癌组有100例阳性,未患癌组有50例阳性。则该试验的特异度为
A.
100/400
B.
350/400
C.
100/150
D.
100/300
E.
50/400
查看完整题目与答案
【单选题】一种筛检乳腺癌的实验应用于已经病理检查证实的乳腺癌患者400人和未患乳腺癌400人。结果患癌组有100例阳性,未患癌组有50例阳性。该试验的灵敏度为( )
A.
100/400
B.
350/400
C.
100/150
D.
100/300
E.
350/650
查看完整题目与答案
【简答题】数据的完整性指数据的正确性、有效性、 。
查看完整题目与答案
【单选题】Which is the main idea about the students in the 1960s?
A.
They smoked marijuana.
B.
They took part in protests.
C.
They read books which were forbidden.
D.
They enjoyed their time at university.
查看完整题目与答案