V1导联R/S>1，V5导联R/S<1，常见于（）A、左心室肥厚B、右心室肥厚C、左束支阻滞D、左前分支阻滞E、左后分支阻滞

编写如下事件过程： Private sub sub1 (ByVal x1 As String, y1 As String) Dim xt As String Dim i As Integer i = Len(x1) Do While i＞= 1 xt = xt + Mid(x1, i, 1) i=i-1 Loop y1 = xt End Sub Private Sub Form. Click() Dim s1 As String, s2 As String s1= "teacher" sub1 s1, s2 Print s2 End Sub 程序运行后，单击窗体，则窗体上显示的内容是

A．rehcaet

B．tahreee

C．themee

D．eerthea

下面程序的输出结果是。 Private Sub Commandl_Click ch$=“ABCDEF” proc ch：Print ch End Sub Private Sub proc(ch As Stnng) s=“” For k=Len(ch) TO 1 Step -1 s=s&Mid(ch，k，1) Next k ch=s End Sub A．ABCDEF B．FEDCBA C．A D．F

A.su

B.suroot

C.su-root

D.su-c"root"

A. :r/^#//g

B. :1,$ s/^#//g

C. :sed s/^#//g

D. :sub s/^#//g

完全性右束支传导阻滞的心电图特点是

A.QRS波群时限≥0.12s，V1～2导联QRS波群呈rsR＇型，V5～6导联S波增宽变深

B.QRS波群时限≥0.12s，V1～2导联QRS波群呈rS型，V5～6导联S波增宽变深

C.QRS波群时限≥0.12s，V1～2导联QRS波群呈rsR′型，V5～6导联R波增宽伴有切迹

D.QRS波群时限≥0.12s，V1～2导联QgS波群呈rS型，V5～6导联R波增宽伴有切迹

E.QRS波群时限≥0.12s，V1～2导联QRs波群R波增宽伴有切迹，V5～6导联QRS波群呈rSR′型

写出程序运行的结果

Public class Base

Public virtual string Hello() {return “Base”;}

Public class Sub:Base

Public override string Hello() {return “Sub”;}

1. Base b = new Base(); b.Hello;

2. Sub s = new Sub(); s.Hello;

3. Base b = new Sub (); b.Hello;

4. Sub s = new Base(); s.Hello;

编写如下事件过程： Option Base 1 Private Sub Form Click() Dim x1()As Integer Dim i As Integer Dim s As Integer ReDim x1(3) For i = 1 To UBound(x1) x1(i)=i + 1 Next i Call sub1(x1) For i = 1 To UBound(x1) s = s + x1(i) Next i Print s End Sub Private Sub sub1(n()As Integer) Dim i As Integer ReDim Preserve n(5) For i = 3 To 5 n(i)=n(i-1)*2 Next i End Sub 程序运行后，单击窗体，则窗体上显示的内容是

A．6

B．12

C．24

D．47

有如下程序： Private Sub Command1 Click() Dim a As Single Dim b As Single a=5：b=4 Call S(a，B)End Sub Sub S(x As Single，y As Single) t=x x=t\y y=t Mod y End Sub 在调用运行上述程序后，a和b的值分别为

A．0 0

B．1 1

C．2 2

D．1 2

下列程序运行后的输出结果是______。

Private Sub f(k，s)

s=1

For j=1 To k

s=s*j

Next

End Sub

Private Sub Command1_Click()

Sum=0

For i=1 To 3

Call f(i，s)

Sum=Sum+s

Next

Print Sum

End Sub