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举一反三
【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】肺部CT图像拍摄时，对于窗选择的基本要求是
A.
一般采用双窗拍摄
B.
只需拍摄肺窗
C.
必须要拍摄骨窗
D.
必须包括肺的宽窗和窄窗各一套
E.
必须拍摄肺窗和纵隔软组织窗
【单选题】关于微距拍摄时使用的对焦模式，下面表述正确的是___。
A.
自动对焦与手动对焦都可以选择，取决于拍摄对象与拍摄时机
B.
由于手动对焦太慢，因此一定要使用自动对焦
C.
由于自动对焦不准，因此一定要使用手动对焦
D.
一定要先手动对焦，再自动对焦，以获得准确焦点