皮皮学，免费搜题
登录
搜题
【单选题】
若某属性非该关系的主码,却是另外一个关系的主码,则该属性称为 _______
A.
全码
B.
主码
C.
候选码
D.
外码
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Which of the following is within the capacity of the artificial nose being developed?
A.
Performing physical examinations.
B.
Locating places which attract terrorists.
C.
Detecting drugs and water contamination.
D.
Monitoring food processing.
查看完整题目与答案
【单选题】During inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the PSCO? 1The quantity of oil residues generated. 2The capacity of slu...
A.
①②
B.
②③
C.
①③
D.
①②③
查看完整题目与答案
【单选题】某材料的计划成本为5000元,成本差异节约300元,该材料的实际成本为( )元。
A.
4700
B.
5300
C.
4970
D.
5030
查看完整题目与答案
【单选题】What does David Shenk worry about?
A.
The capacity of the gene pool.
B.
The nurture of subsequent generations.
C.
The dramatic increase of world population.
D.
The consequences of excessive genetic shifts.
查看完整题目与答案
【单选题】Performing physical examinations is whitin the capacity of the artificial nose being developed.
A.
Right
B.
Wrong
C.
Not mentioned
查看完整题目与答案
【判断题】所谓理想流体,就是把流体看作绝对不可压缩、不能膨胀、有粘滞性、没有表面张力的连续介质。
A.
正确
B.
错误
查看完整题目与答案
【单选题】水平移心量的计算为负值时,说明镜片需向( )移心。
A.
颞侧
B.
鼻侧
C.
上方
D.
下方
查看完整题目与答案
【判断题】所谓理想流体,就是把流体看作绝对不可压缩.有粘性的连续介质。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If the capacity of the refrigeration compressor is too large, the saturation temperature will _____.
A.
rise
B.
fall
C.
be maintained constant
D.
None of the above
查看完整题目与答案
【判断题】所谓理想流体，就是把流体看作绝（对）不可压缩.有粘性的连续介质。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】Which of the following is within the capacity of the artificial nose being developed?
A.
Performing physical examinations.
B.
Locating places which attract terrorists.
C.
Detecting drugs and water contamination.
D.
Monitoring food processing.
查看完整题目与答案
【单选题】During inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the PSCO? 1The quantity of oil residues generated. 2The capacity of slu...
A.
①②
B.
②③
C.
①③
D.
①②③
查看完整题目与答案
【单选题】某材料的计划成本为5000元,成本差异节约300元,该材料的实际成本为( )元。
A.
4700
B.
5300
C.
4970
D.
5030
查看完整题目与答案
【单选题】What does David Shenk worry about?
A.
The capacity of the gene pool.
B.
The nurture of subsequent generations.
C.
The dramatic increase of world population.
D.
The consequences of excessive genetic shifts.
查看完整题目与答案
【单选题】Performing physical examinations is whitin the capacity of the artificial nose being developed.
A.
Right
B.
Wrong
C.
Not mentioned
查看完整题目与答案
【判断题】所谓理想流体,就是把流体看作绝对不可压缩、不能膨胀、有粘滞性、没有表面张力的连续介质。
A.
正确
B.
错误
查看完整题目与答案
【单选题】水平移心量的计算为负值时,说明镜片需向( )移心。
A.
颞侧
B.
鼻侧
C.
上方
D.
下方
查看完整题目与答案
【判断题】所谓理想流体,就是把流体看作绝对不可压缩.有粘性的连续介质。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If the capacity of the refrigeration compressor is too large, the saturation temperature will _____.
A.
rise
B.
fall
C.
be maintained constant
D.
None of the above
查看完整题目与答案
【判断题】所谓理想流体，就是把流体看作绝（对）不可压缩.有粘性的连续介质。
A.
正确
B.
错误
查看完整题目与答案