搜题请搜索小程序“爱下问搜题”
问题
填空题
哪三种市场不完全导致企业拥有垄断优势（）（）（）。
答案
参考答案：产品差异；专有技术优势；规模经济优势
填空题
方程x-2=x（x-2）的根是______．
查看答案
选择题
—Excuse me, look at the sign over there, please. Could you stop smoking?
—Sorry, I ____ that.
A. didn't see
B. don't see
C. won't see
D. can't see
查看答案
