一个外角为36°的正多边形的边数为______.
设所求正n边形边数为n,
则36°n=360°,
解得n=10.
故正多边形的边数是10.
故答案为:10.
人类最早使用的纸币是()。
A.会子
B.快克
C.交子
D.银元券
The project team members should also be aware of one of the fundamental tenets of modern quality management: quality is planned, designed and built in, not()
A.executedin
B.inspectedin
C.check-in
D.look-in