已知Y1服从N(12, 12),Y2服从N(10, 22),当以n1=n2=8抽样时,两个样本平均数差数y1-y2服从N()
单击命令按钮时,下列程序的执行结果为 Private Sub Command1_Click( ) Dim x As Integer,y As Integer x=12:y=32 Call Proc(x,y) Print x;y End Sub Public Sub Proc(n As Integer,ByVal m As Integer) n=n Mod 10 m=m Mod 10 End SubA.12 32B.2 32C.2 3D.12 3
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请选出以下程序的输出结果 ______。include sub(x, y, z)int x, y,*z;{*z=y-x:}main()请选出以下程序的输出结果 ______。#include <stdio. h>sub(x, y, z)int x, y,*z;{*z=y-x:}main(){ int a, b, c; sub 10,5,&a);sub(7,a,&b);sub(a, b, &c); printf("%d,% d,/%d\n", a, b, c);}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7
单击命令按钮时,下列程序的执行结果为 Private Sub Command1_Click Dim x As Integer, y As Integer x=12:y=32 Call Proc(x,y. Print x; y End Sub Public Sub Proc(n As Integer, ByVal m As Integer. n=n Mod 10 m=m Mod 10 End SubA.1232B.232C.23D.123
在窗体上画一个名称为Command1的命令按钮,并编写如下程序: Private Sub Command1_Click( ) Dim x As integer Static y As integer x=10 y=5 Call f1(x,y) Print x,y End Sub Private Sub f1(ByRef xl As Integer,y1 As Integer) x1=x1+2 y1=y1+2 End Sub 程序运行后,单击命令按钮,在窗体上显示的内容是A.10 5B.12 5C.10 7D.12 7
在窗体上画一个名称为Commandl的命令按钮,然后编写如下事件过程: Private Sub Command1_Click() Dim x As Integer,y As Integer x = 41: y = 54 Call sub1(x,y) x = x + 1 Print x; y End Sub Private Sub sub1(n As Integer, ByVal m As Integer) n=n Mod 10 m=m\10 End Sub 程序运行后,单击命令按钮,则窗体上显示的内容是A.41 54B.2 54C.1 3D.42 3
单击命名按钮时,下列程序代码的执行结果为 Public Sub procl ( n As Integer, Byval m As Integer) n=n Mod 10 m=m Mod 10 End Sub Private Sub Cmmand1 Click() Dim x As Integer, y As Integer x=12:y=12 Call Procl (x, y) Print x;y End SubA.12 2B.2 12C.2 2D.12 12
执行下面的一段C程序后,输出结果变量应为______。 sub (int x, int y, int *z) { *z=y-x; } main() { int a, b, c; sub (10, 5, &a); sub(7, a, &b); sub(a, b, &c); printf ("%d, %d, %d\n", a, b, c); }A. 5, 2, 3 B. -5, -12, -7 C. -5, -12, -17 D. 5, -2, -7