选项
A.
Toplayer设置为：Horizontal;Bottomlayer设置为：Any
B.
Toplayer设置为：Vertical;Bottomlayer设置为：Any
C.
Toplayer设置为：Horizontal;Bottomlayer设置为：Vertical
D.
Toplayer设置为：Any;Bottomlayer设置为：Vertical
正确答案：
名词解析
C