碳二加氢反应器H₂S中毒的基本特征是什么？

A、Pa0/sub2/supsubno<60mHl.PaCO/sub2/supsubno>50mmlg

B、Pa0/sub2/supsubno<60mHgPaCO/sub2/supsubno<45mmg

C、Pa0/sub2/supsubno<60mmHgPaCO/sub2/supsubno>50mmH

D、Pa0/sub2/supsubno<60mHg、PaCO/sub2/supsubno<45mmHg

E、Pa0/sub2/supsubno<60mHg、PaC0/sub2supsubno45mmHg

A、PH7.38，PaO<SUB>2</SUB>50mmHg，PaCO<SUB>2</SUB>40mmHg

B、PH7.30，PaO<SUB>2</SUB>50mmHg，PaCO<SUB>2</SUB>80mmHg

C、PH7.40，PaO<SUB>2</SUB>60mmHg，PaCO<SUB>2</SUB>65mmHg

D、PH7.35，PaO<SUB>2</SUB>80mmHg，PaCO<SUB>2</SUB>20mmHg

E、PH7.25，PaO<SUB>2</SUB>70mmHg，PaCO<SUB>2</SUB>20mmHg

血气分析结果符合代偿性代谢性酸中毒（ ）

在窗体上画一个命令按钮和两个文本框，其名称分别为Command1、Text1和Text2，然后编写如下程序： Dim S1 As String,S2 As String Private Sub Form_Load() Text1.Text＝"" Text2.Text＝"" End Sub Private Sub Text1_KeyDown(KeyCode As Integer,Shift As Integer) S2=S2 & Chr(Keycode) End Sub Private Sub Text1_KeyPress(KeyAscii As Integer) S1=S1 & Chr(KeyAscii) End Sub Private Sub Command1_Click() Text1.Text=S2 Text2.Text=S1 S1＝"" S2＝"" End Sub 程序运行后，在Text1中输入“abc”，然后单击命令按钮，在文本框Text1和Text2中显示的内容分别为______。

A．abc和ABC

B．abc和abe

C．ABC和abc

D．ABC和ABC

下列程序的执行结果为 Private Sub Commandl_Click() Dim s1 As String ,s2 As String s1= "abcd" Call Transfer(sl，s2) Print s2 End Sub Private Sub Transfer (ByVal xstr As String，ystr As String) Dim tempstr As String ystr=tempstr End Sub

A．dcba

B．abdc

C．abcd

D．dabc

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;

在窗体中添加一个名称为Command1的命令按钮，然后编写如下程序： Public x As Integer Private Sub Command1_Click() x=10 Call s1 Call s2 MSgBox x End Sub Private Sub s1() x=x＋20 End Sub Private Sub s2() Dim x As Integer x=X＋20 End Sub 窗体打开运行后，单击命令按钮，则消息框的输出结果为______。

A．10

B．30

C．40

D．50

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

A、Sub plus(sum, a , b ): sum = a + b: End Sub

B、Sub plus(ByVal sum , a , b ): sum = a + b: End Sub

C、Sub plus(sum , ByVal a, ByVal b ): sum = a + b: End Sub

D、Sub plus(sum , ByRef a , ByRef b ): sum = a + b: End Sub

在窗体中添加一个名称为Commandl的命令按钮，然后编写如下程序： Public x As Integer Private Sub Commandl_click() x＝10 Call s 1 Call s 2 MsgBOx x End Sub Pfivate Sub s1() x＝x+20 End Sub Private Sub

A．10

B．30

C．40

D．50