单项选择题
A.a B.b C.c D.都不能省略
A.Lable1.BackStyle=0:Lable1.BorderStyle=0 B.Lable1.BackStyle=1:Lable1.BorderStyle=1 C.Lable1.BackStyle=true:Lable1.BorderStyle=true D.Lable1.BackStyle=Flase:Lable1.BorderStyle=False
A.1和0 B.2和72 C.3和50 D.4和168
(B)(
单
)