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【单选题】
下列关于数据库系统的描述中,不正确的是( )
A.
可以实现数据共享,减少数据冗余
B.
实现整体数据的结构化
C.
数据库的共享是并发的
D.
数据独立性较差
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参考解析：
知识点：
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举一反三
【单选题】What distinguishes the end-Permian mass extinction from other similar devastations?
A.
Change of ocean chemistry.
B.
Survival of Miocidaris.
C.
Causes.
D.
Ecological reorganization.
查看完整题目与答案
【判断题】禁止连续操作启动开关上电 / 下电
A.
正确
B.
错误
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【单选题】What distinguishes an extended example from other types of examples?
A.
It is brief.
B.
It is personal.
C.
It is given in passing.
D.
It provides more details.
查看完整题目与答案
【单选题】决定教育性质的根本因素是
A.
生产力
B.
文化
C.
政治经济制度
D.
科技水平
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【单选题】What distinguishes a hypothetical example from other types of examples?
A.
It is a specific instance.
B.
It describes an imaginary situation.
C.
It is emotionally appealing.
D.
It is a story or anecdote.
查看完整题目与答案
【判断题】二级引证文献就是参考文献的参考文献。
A.
正确
B.
错误
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【多选题】食用菌原种的作用( )
A.
繁殖栽培种
B.
保藏菌种
C.
直接栽培出菇
D.
制作原种
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【多选题】食用菌母种的作用（ ）
A.
繁殖菌种
B.
保藏菌种
C.
直接出菇
D.
制作原种
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【单选题】According to the professor, what distinguishes Jackson Pollock's work?
A.
The method he used for applying paint to a canvas.
B.
The location where he did his work.
C.
The widespread popularity of his style of art.
D.
The size of the paintings he produced.
查看完整题目与答案
【单选题】What distinguishes stem cells from other cell types?
A.
Although all cell types can divide, only stem cells differentiate after division.
B.
Stem cells are able to divide to produce populations of cells that differentiate into a related set of cells.
C.
Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.
D.
Stem cells have a special type of cell division in which they form small stems that then pinch off to give rise to the daughter cell.
查看完整题目与答案
相关题目：
【单选题】What distinguishes the end-Permian mass extinction from other similar devastations?
A.
Change of ocean chemistry.
B.
Survival of Miocidaris.
C.
Causes.
D.
Ecological reorganization.
查看完整题目与答案
【判断题】禁止连续操作启动开关上电 / 下电
A.
正确
B.
错误
查看完整题目与答案
【单选题】What distinguishes an extended example from other types of examples?
A.
It is brief.
B.
It is personal.
C.
It is given in passing.
D.
It provides more details.
查看完整题目与答案
【单选题】决定教育性质的根本因素是
A.
生产力
B.
文化
C.
政治经济制度
D.
科技水平
查看完整题目与答案
【单选题】What distinguishes a hypothetical example from other types of examples?
A.
It is a specific instance.
B.
It describes an imaginary situation.
C.
It is emotionally appealing.
D.
It is a story or anecdote.
查看完整题目与答案
【判断题】二级引证文献就是参考文献的参考文献。
A.
正确
B.
错误
查看完整题目与答案
【多选题】食用菌原种的作用( )
A.
繁殖栽培种
B.
保藏菌种
C.
直接栽培出菇
D.
制作原种
查看完整题目与答案
【多选题】食用菌母种的作用（ ）
A.
繁殖菌种
B.
保藏菌种
C.
直接出菇
D.
制作原种
查看完整题目与答案
【单选题】According to the professor, what distinguishes Jackson Pollock's work?
A.
The method he used for applying paint to a canvas.
B.
The location where he did his work.
C.
The widespread popularity of his style of art.
D.
The size of the paintings he produced.
查看完整题目与答案
【单选题】What distinguishes stem cells from other cell types?
A.
Although all cell types can divide, only stem cells differentiate after division.
B.
Stem cells are able to divide to produce populations of cells that differentiate into a related set of cells.
C.
Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.
D.
Stem cells have a special type of cell division in which they form small stems that then pinch off to give rise to the daughter cell.
查看完整题目与答案