下列哪个不是常见的UML工具。()
A.Rational Rose
B.MSvisual Modeler
C.JTogether
D.MS Project
参考答案:A
It’s said that he started his own firm when he was only 24.
A. built
B.established
C.invented
D.created.
一直以来,英国是世界服务贸易最主要的国家。