f(x)=x3-3x2+1的单调减少区间是______。 A.(-∞,0) B.( 发布时间:2017-12-08 09:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: f(x)=x3-3x2+1的单调减少区间是______。A.(-∞,0) B.(0,2) C.(2,∞) D.(0,∞)
题型:单项选择题 ______ around the Water Cube , we were taken to see the Bird’s Nest for the 2008 Olympic Games.A.Having shownB.To be shownC.Having been shownD.To show 查看答案