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(21 )下面正确使用动态数组的是A )Dim arr () As Integer…ReDim arr (3 , 5 )B )Dim arr () As


(21 )下面正确使用动态数组的是

A )

Dim arr () As Integer

ReDim arr (3 , 5 )

B )

Dim arr () As Integer

ReDim arr (50 ) As String

C )

Dim arr ()

ReDim arr (50 ) As Integer

D )

Dim arr (50 ) As Integer

ReDim arr (20 )

请帮忙给出正确答案和分析,谢谢!

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