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【判断题】
在定义表间关系时，应设立一些准则，这些准则将有助于维护数据的完整性。参照完整性就是在输入、删除或更新记录时，为维持表之间数据的统一必须遵循的规则。
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】Which of the following is NOT one of the findings of the research?
A.
Some schools chose pupils who got excellent results in music examinations.
B.
The proportion of pupils not getting their first choice in Hillingdon was 29. 5 percent.
C.
Some schools were asking personal information about parents.
D.
The number of secondary schools selecting pupils by aptitude increased.
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【单选题】The findings of the two archaeologists threw light on the burial customs of the ancient Egyptians.
A.
paid attention to
B.
gave faith to
C.
laid emphasis on
D.
gave insight into
查看完整题目与答案
【判断题】标准渐开线齿轮的的齿形系数大小与模数有关,与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关,与齿数无关。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】看到一份工程设计图,专业人员能看清每个细节,非专业人员只能看图像,这体现了知觉的( )。
A.
选择性
B.
理解性
C.
整体性
D.
统一性
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关,与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的的齿形系数大小与模数有关，与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关，与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The findings of the study on the satisfaction ratings in romantic relationship reveal that ______.
A.
meditation can keep the relationship at its peak
B.
retrospection helps people feel satisfied with the partner
C.
specific analysis can foretell the future of the relationship
D.
thinking about delails makes one uncertain about the relationship
查看完整题目与答案
【简答题】What is one of the findings of the research? The effects of music do not ______.
查看完整题目与答案
相关题目：
【单选题】Which of the following is NOT one of the findings of the research?
A.
Some schools chose pupils who got excellent results in music examinations.
B.
The proportion of pupils not getting their first choice in Hillingdon was 29. 5 percent.
C.
Some schools were asking personal information about parents.
D.
The number of secondary schools selecting pupils by aptitude increased.
查看完整题目与答案
【单选题】The findings of the two archaeologists threw light on the burial customs of the ancient Egyptians.
A.
paid attention to
B.
gave faith to
C.
laid emphasis on
D.
gave insight into
查看完整题目与答案
【判断题】标准渐开线齿轮的的齿形系数大小与模数有关,与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关,与齿数无关。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】看到一份工程设计图,专业人员能看清每个细节,非专业人员只能看图像,这体现了知觉的( )。
A.
选择性
B.
理解性
C.
整体性
D.
统一性
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关,与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的的齿形系数大小与模数有关，与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【判断题】标准渐开线齿轮的齿形系数大小与模数有关，与齿数无关。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The findings of the study on the satisfaction ratings in romantic relationship reveal that ______.
A.
meditation can keep the relationship at its peak
B.
retrospection helps people feel satisfied with the partner
C.
specific analysis can foretell the future of the relationship
D.
thinking about delails makes one uncertain about the relationship
查看完整题目与答案
【简答题】What is one of the findings of the research? The effects of music do not ______.
查看完整题目与答案
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