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【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】(31405)如果冷却风机自动位及手动位风扇不工作，应（ ）。
A.
检查主电路：空气开关、接触器、热继电器及线路。
B.
检查控制电路：压力式温度继电器、熔断器、高低压继电器及线路。
C.
检查冷却风机是否烧损。
D.
以上都需要
【单选题】离心式风扇具有具有（）特点。
A.
结构紧凑、尺寸小、风量大，而且对风扇安装方便
B.
结构紧凑、转速快、风量大，而且对风扇安装方便
C.
结构紧凑、风量大、噪音低，而且随转速下降，风扇噪音明显降低
D.
结构紧凑、风量大、噪音低、而且随转速上升，风扇噪音明显降低