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举一反三
【单选题】关于135单镜头反光照相机，说法正确的是（）
A.
其可以方便地更换视角从1°至180°的各种不同的镜头
B.
其可以方便地更换视角从1°至90°的各种不同的镜头
C.
其可以方便地更换视角从1°至270°的各种不同的镜头
D.
其可以方便地更换视角从1°至30°的各种不同的镜头
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
【单选题】（ ）是相机取景器的作用。
A.
观察被摄景物的范围，选取合适的拍摄场面
B.
观察被摄景物的范围，选取合适的曝光时间
C.
观察被摄景物的形状质感，选取合适的拍摄场面
D.
观察被摄景物的范围，选取合适的拍摄场面