题型:问答题 简答题 若点P在曲线y=x3-3x2+(3-3)x+34上移动,经过点P的切线的倾斜角为α,则角α的取值范围是( )A.[0,π2)B.[0,π2)∪[2π3,π)C.[2π3,π)D.[0,π2)∪(π2,2π3] 查看答案