问题描述:
[多选]
在求圆的面积的程序中,半径r和面积s可能带有小数,下列对半径r和面积s的声明最合适的是()
A.Dim r As Integer; s As Integer
B.Dim r,s As single
C.Dim r As Single, s as Single
D.Dim r As Integer: Dim s As Integer
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