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多项选择题
A.Dim sw As StreamWriter = New StreamWriter(path, true)
B.Dim sw As StreamWriter = New StreamWriter(path, false)
C.Dim sw As StreamWriter = File.Append(path)
D.Dim sw As StreamWriter = File.AppendText(path)
单项选择题
A.FileMode
B.FileAccess
C.FileShare
D.SeekOrigin