计算(x-y)(y+x)结果是[ ] A. -x2+y2 B. -x2-y2 C 发布时间:2017-05-05 15:04 │ 来源:www.tikuol.com 题型:选择题 问题: 计算(x-y)(y+x)结果是[ ]A. -x2+y2 B. -x2-y2 C. x2-y2 D. x2+y2
题型:选择题 — ________ I remind you of is to return the book to our English teacher. — I will give it to him _________ I see him. [ ]A. That; immediately B. What; the moment C. What; while D. Whether; once 查看答案
题型:选择题 在窗体上建立一个单选钮组Option1和一个图片框Picture1,如下图所示。当选择不同的单选钮时,图片框中填充不同的图案,请填写程序的空白处,使程序完整。 Private Sub Option1_Click(______) Dim H, WPicture1.ClsPicture1.FillStyle =______W = Picture1.ScaleWidth/2H = Picture1.ScaleHeight/2Picture1.Circle (W, H), W/2 End Sub 查看答案