若方程x2-2|x|+3=k有四个互不相等的实数根,则k的取值范围是______ 发布时间:2017-04-30 15:03 │ 来源:www.tikuol.com 题型:填空题 问题: 若方程x2-2|x|+3=k有四个互不相等的实数根,则k的取值范围是______.
题型:填空题 After ____ seemed to be a long time, the badly wounded soldier came back to life. [ ]A. that B. it C. which D. what 查看答案