实时操作系统必须在内处理完来自外部的事件。-刷刷题APP

【单选题】操作系统为我们提供了“?”这个通配符，它表示______。

A.

零个或一个未知字符

B.

表示零个或若干个未知字符

C.

一个未知字符

D.

若干个未知字符

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【单选题】下面关于实时操作系统( RTOS)的叙述中，不正确的是(26)。

A.

实时操作系统中，首要任务是调度一切可利用的资源来完成实时控制任务

B.

实时计算中，系统的正确性仅依赖于计算结果，不考虑结果产生的时间

C.

实时操作系统就是系统启动后运行的一个后台程序

D.

实时操作系统可以根据应用环境的要求对内核进行裁减和重配

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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

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