键结合(不动)的轴槽的表面粗糙度Ra值不大于()。
文本框Text1的KeyDown事件过程如下: Private Sub Text 1_KeyDown(KeyCode As Integer,Shift As Integer) … End Sub 其中参数KeyCode的值表示的是发生此事件时( )。A.是否按下了<Alt>键或<Ertl>键B.按下的是哪个数字键C.所按的键盘键的键码D.按下的是哪个鼠标键
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在窗体中添加一个标签LblResult和一个命令按钮Command1,然后编写程序。程序的功能是单击命令按钮,计算1+2+3+4+5的值,并把结果转化为字符串显示在标签内,能够实现上述功能的程序段是, ( )A.Private Sub Command1_Click() Dim I,R As Integer For I=1 To 5 Step 1 R=R+I Next LblResult. Name=Str$ (R) End SubB.Private Sub Command1_ClickO Dim I,R As Integer For I=1 To 5 Step 1 R=R+I Next LblResult. Caption= Str$ (R) End SubC.Private Sub Command1_Click() Dim I,R As Integer Do While I<5 R=R+I I=I+1 Loop LblResult. Caption=Str$ (R) End SubD.Private Sub Command1_Click() Dim I,R As Integer Do R=R+I I=I+1 Loop While I<5 LblResult. Caption=Str$ (R) End Sub
【程序说明】 计算下列算式的值。a,Ai为正整数,从键盘输入。其小∑Ai=1+2…+ Ai,Ai!=1 *2*3*Ai(i=1,2… a)。【程序】SET TAIK OFFCLEARINPUT“M=”TO MSTORE 0 TO S1,S2FOR I=1 TO M(8)DO SUB1DO SUB2ENDFOR? ” 所求算式的值为:“+ALLTRIM(STR(S1/S2,15,3))SET TALK ONPROCEDURE SUB1(9)FOR R=1 TO AK=K+RENDFOR(10)RETURNPROCEDURE SUB2(11)FOR P=1 TO AT=T*PENDFOR(12)RETURN(8)A.INPUT“A=”TO AB.INPUT“I=”TO IC.INPUT“R=”TO STR(R)D.INPUT“K=”TOK
编写如下事件过程: Private Sub Form_KeyDown (KeyCode As Integer,Shift As Integer) Print Chr(KeyCode) End Sub Private Sub Form_Key Press (KeyAscii As Integer) Print Chr (Key Ascii) End Sub 在一般情况下(即不按住Shift键和锁定大写键时)运行程序,若按“T”键,则程序输出的结果是A.T TB.t TC.T TD.t t
在窗体上画了两个按钮控件Command1和Command2,有如下程序: Private Sub Command1_Click() Print "Visual"; End Sub Private Sub Command2_Click() Print "Basic"; End Sub Private Sub Form_Load() CommandCancel=True Command1.Cancel=True End Sub 执行程序后,按键盘Cancel键,在窗体上输出的结果是A.BasicB.VisualC.CancelD.True
编写如下两个事件过程: Private Sub Form_KeyDown (KeyCode As Integer, Shift As Integer) Print Cb_r(KeyCode) End Sub Private Sub Form_KeyPress( KeyAscii As Integer) Print Chr(KeyAscii) End Sub 在一般情况下(即不按住Shift键和锁定大写键时)运行程序,如果按“A”键,则程序输出的结果是A.A AB.a AC.A aD.a a
将窗体的KeyPreview属性设置为True,然后编写如下过程: Private Sub Form. KeyDown(KeyCode As Integer,Shift As Integer) Print Chr(KeyCode) End Sub Private Sub Form_KeyUp(KeyCode As Integer,Shift As Integer) Print Chr(KeyCode+2) End Sub 程序运行后,如果按“A”键,则输出的结果为A.A AB.A BC.A CD.A D