用Na2C204基准物标定KmnO4溶液时,应将溶液加热至75~85℃后,再进行滴定。
第1题:
有如下程序: Private Sub Command1_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1(a,b) End Sub Sub Sub1(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
第2题:
以下程序的输出结果是( )。
include<stdio.h>
main()
fint x=0;
sub(&x,16,2);
printf("%d\n",x);
}
sub(int*a,int n,int k)
{if(k<=n) sub(a,n/2,2*k);
*a+=k;
}
第3题:
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
第4题:
有如下程序。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1 ( a,B)End Sub Sub Subl(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
D.1 2
第5题:
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
第6题:
在窗体中添加一个命令按钮,编写如下程序: Private Sub Sub1(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub1:";p;m;n End Sub Private Sub Command1_Click() a1=1:b=2:c1=3 Call Sub1(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为
A.Sub: 2 6 4 Main: 2 6 4
B.Sub: 2 6 4 Main: 2 6 4
C.Sub: 2 6 4 Main: 1 2 3
D.Sub: 2 6 4 Main: 2 2 3
第7题:
s=”this is the mainstring”,sub=”string”,strindex(s,sub)是()
第8题:
V<sub>1</sub>>V<sub>2 </sub> </p>
V<sub>1</sub><V<sub>2</sub> </p>
V<sub>1</sub>=V<sub>2</sub> </p>
不能确定
第9题:
CO
<p>CH<sub>4</sub>、SO<sub>2</sub></p>
<p>SO<sub>2</sub>、CO</p>
<p>CO、CH<sub>4</sub>、SO<sub>2</sub></p>
第10题:
<p>I<sub>2</sub>=I<sub>3</sub></p>
<p>I<sub>2</sub>=4I<sub>3</sub></p>
<p>I<sub>2</sub>=2I<sub>3</sub></p>
<p>I<sub>3</sub>=4I<sub>2</sub></p>
第11题:
m<sub>0</sub><m<sub>e</sub><(x
m<sub>0</sub>=m<sub>e</sub>=(x
m<sub>0</sub>>m<sub>e</sub>>(x
m<sub>e</sub><m<sub>0</sub><(x
第12题:
u<sub>0.49</sub>>0
u<sub>0.3</sub><u<sub>0.4 </sub>
u<sub>0.5</sub>=0
u<sub>0.23</sub>=-u<sub>0.77 </sub>
u<sub>0.5</sub>=-u<sub>0.5</sub>
第13题:
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( )
第14题:
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 slCall s2MsgBox x End Sub Private Sub sl( )x=x+20 End Sub Private Sub s2( )Dim x As Integer x=x+20End 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
第15题:
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;
第16题:
PaO<SUB>2</SUB>↓,PaCO<SUB>2</SUB>↑提示( )
第17题:
运行下列程序:
Private Sub form_Click( )
x = 8: y = 2
Call fun1((x), y)
Print x, y
End Sub
Private Sub fun1(x, y)
s = x
x = s / y
y = s Mod y
End Sub
单击窗体后,则在窗体上显示的结果是( )。
A.4 2
B.8 2
C.8 0
D.2 4
第18题:
class Super { public int i = 0; public Super(String text) { i = 1; } } public class Sub extends Super { public Sub(String text) { i = 2; } public static void main(String args[]) { Sub sub = new Sub(“Hello”); System.out.println(sub.i); } } What is the result?()
第19题:
<p>Re<sub>1</sub>=0.5Re<sub>2</sub></p>
<p>Re<sub>1</sub>=Re<sub>2</sub></p>
<p>Re<sub>1</sub>=1.5Re<sub>2</sub></p>
<p>Re<sub>1</sub>=2Re<sub>2</sub> </p>
第20题:
0
1
2
Compilation fails.
第21题:
<p>1K<sub>m</sub></p>
<p>2K<sub>m</sub></p>
<p>3K<sub>m</sub></p>
<p>4K<sub>m</sub></p>
<p>5K<sub>m</sub></p>
第22题:
Compilation will fail.
Compilation will succeed and the program will print “0”
Compilation will succeed and the program will print “1”
Compilation will succeed and the program will print “2”
第23题:
<p>U<sub>95</sub>= 1%,v<sub>eff</sub> =9 </p>
<p>U<sub>r</sub>= 1%,k=2 </p>
<p>u<sub>C</sub>=0. 5% </p>
<p>u<sub>C</sub>=±0 5%.k=1 </p>
第24题:
<p>M<sub>0</sub></p>
<p>M<sub>1</sub></p>
<p>M<sub>2</sub></p>
<p>M<sub>3</sub></p>