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【单选题】
关于图论中的图,以下叙述不正确的是:A.
点表示研究对象，弧表示研究对象之间的特定关系
B.
用点和点的相互位置，边的长短曲直来表示研究对象的相互关系
C.
边表示研究对象，点表示研究对象之间的特定关系
D.
可以改变点与点的相互位置，只要不改变点和点的连接关系
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【单选题】Where there is no law, there can be no crimes. The first question, therefore, is: Are there any international crimes? And the answer is No--for several reasons. In the first place, there is no body of...
A.
the article in a law
B.
the actual existence
C.
people in an organization
D.
main part of something
【单选题】There is no doubt that holding such _____ National Day parade will significantly enhance _____ national pride and self-confidence of Chinese People. [ ]
A.
a; the
B.
a; a
C.
the; the
D.
the; a
【单选题】________ is a National Day in Britain, for there is no fixed day which is a National Day.
A.
The birthday of Prince of Wales
B.
New Year's Day
C.
Waitangi Day
D.
The birthday of the British Monarch
【单选题】已知一渐开线标准直齿圆柱齿轮，齿数z=25,齿顶高系数ha*=1，齿顶圆直径da=135mm,则其模数大小应为 。
A.
2mm
B.
4mm
C.
5mm
D.
6mm
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