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举一反三
【单选题】日立HT-3842的DE board主板的功能是（）
A.
上部单元驱动控制板
B.
将+36V转换为+5V，-15V，+15V
C.
整个机芯控制板
D.
与PC交换信息时，进行数据鉴证
【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】下列有关PC机主板的叙述中,错误的是（）。
A.
主板的物理尺寸没有标准,各厂家均可自行定义
B.
主板上包含芯片组,它是PC机各组成部分相互连接和通信的枢纽
C.
主板上包含BIOS和CMOS芯片
D.
主板上包含CPU插座、内存条插槽及其它类型的插槽