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【单选题】
卫星地面接收站之所以能准确捕捉运动的卫星发射机的一个主要原因是因为地面接收系统具有什么功能？
A.
卫星管理系统
B.
卫星能源系统
C.
卫星 跟踪、遥测系统
D.
卫星发射系统
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】脉冲调制器是主振放大式发射机的重要组成部分。雷达在 ( )的作用下，各级功率放大 器受脉冲调制器控制，将频率源送来的射频信号放大，输出大功率的射频脉冲信号。
A.
功率信号
B.
射频信号
C.
视频信号
D.
触发脉冲
【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