第一是Graduate school of management和business and commerce的区别,我在ETS的bulletin上查到了专业代码,但是business and commerce是在social science下面的分支,而graduate school of management是和social science并列的分类,请问它们有什么区别?好像都提供金融会计那样的课程,是不是business and commerce不需要工作经验阿?graduate school of management和business school又有什么区别呢?