网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)

假设有下列3种化合物XY,X2Y3,X3Y4,已知XY,X2Y3的分子量分别为M1,M2,则X3Y4的分子量为M1+M2


参考答案

更多 “假设有下列3种化合物XY,X2Y3,X3Y4,已知XY,X2Y3的分子量分别为M1,M2,则X3Y4的分子量为M1+M2。” 相关考题
考题 ( 27 )要想在过程 Proc 调用后返回形参 x 和 Y 的变化结果,下列定义语句中正确的是A ) Sub Proc ( x as Integer,y as Integer )B ) Sub Proc ( ByVal x as Integer, y as Integer )C ) Sub Proc ( x as Integer,Byval y as Integer )D ) Sub Proc ( Byval x as Integer, Byval y as Integer )

考题 有以下程序:int sub(int n) { return(n/10+n%10); }void main(){ int x,y; scanf("%d",x); y=sub(sub(sub(x))); printf("%d\n",y);}若运行时输入:4321回车,程序的输出结果是。

考题 (13)单击命令按钮时,下列程度的执行结果是 Private Sub Command1_Click() Dim a As Integer,b As Integer,c As Integer a=2:b=4:c=6 Call S2(a,b) Print"a=";a;"b=";b;"c=";c; End Sub Private Sub S1(x As Integer,y As Integer) Dim c As Integer x=2*x:y=y+2:e=x+y End Sub Sub S2(x As Integer,By Val y As Integer) Dim e As Integer x=2*x:y=y+2:e=x+y End Sub A.a=4 b=6 c=6 B.a=8 b=6 c=6 a=4 b=6 c=6 a=8 b=6 c=6 C.a=4 b=6 c=6 D.a=8 b=6 c=6 a=8 b=6 c=6 a=4 b=6 c=6

考题 (12)有下列Sub过程: Sub Sub(x As Single,y As Single) t=x x=t/y y=t Mody End Sub 在窗体上的命令按钮Commandl中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a,b Print a;b End Sub A.1.25 1 B.5 4 C.4 5 D.1 1.25

考题 以下过程的定义中,( )是错误的。 A、Public Sub Sum(x ; y)B、Public Sub Sum(ByVal x, ByVal y)C、Public Sub Sum(x As Integer,y As Integer)D、Public Sub Sum(x%, y%)

考题 下面各被调用函数首部书写正确的是( )A.void sub(float x;float y);B.void sub(float x,y)C.void sub(float x,float y)D.void sub(float x,float y);

考题 Command1_Click()事件代码如下: Private Sub Command1_Click() Dim x As Integer, Y As Integer x = 6 : Y : 8 Call ABC(X, Y) Print X; Y End Sub Private Sub ABC(ByVal X As Integer,Y As Integer) X = X + 4 Y = Y = 2 End Sub 事件发生后,X和Y的值分别为 ______。A.6, 8B.10, 10C.10, 8D.6, 10

考题 以下程序的运行结果是()。includevoid sub(int x,int y,int*z){*Z=y-x;}void main() 以下程序的运行结果是( )。 #include<iostream.h> void sub(int x,int y,int*z) {*Z=y-x;} void main() {int a,b,c; sub(10,5,a); sub(7,a,b); sub(a,b,c); cout<<a<<“,”<<b<<“,”<<c<<endl;}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7

考题 有以下程序:int sub(int n) { return(n/10+n%10); }main(){ int x, y;scanf("% d", x);y=sub(sub(sub(x)));printf("% d\n", y);}若运行时输入:1234<回车>,程序的输出结果是【 】。

考题 有如下过程:Sub SS(ByVal X,ByRef Y,Z)X=X + 1Y=Y + 1Z=Z + 1End Sub执行该过程的事件过程如下:Private Sub Command1_Click()A = 1B = 2C = 3Call SS(A,B,C) Print A;B;CEnd Sub则该程序的执行结果是【 】。

考题 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 0B. 1 1C.2 2D.1 2

考题 若有以下变量和函数说明:includecharCh='*';void sub(int x,int y,char ch,double* 若有以下变量和函数说明: #include<iostream.h> charCh='*'; void sub(int x,int y,char ch,double*Z) { switch(ch) { case'+':*Z=x+y;break; case'-':*Z=x-y;break: case'*':*Z=x*y;break; case'/':*z=x/y;break: } } 以下合法的函数调用语句是( )。A.sub(10,20,Ch,y);B.sub(1.2+3,2*2,'+',Z);C.sub(sub(1,2,'+',y),sub(3,4'+',x),'-',y);D.sub(a,b,x,ch);

考题 有如下程序: Private Sub Commandl_Click() Dim a As Single Dim b As Single a=2:b=4 Call CS(a,b)End Sub Sub CS(x As Single,y As Single) t=X x=t\y y=t Mod y End Sub 程序运行后,单击命令按钮,a和b的值分别为A.0 0B.1 1C.0 2D.1 2

考题 请选出以下程序的输出结果()includesub(x,y,z)int x,y,*z;{ *2=y-x;}main(){ int a,b, 请选出以下程序的输出结果( ) #include<stdio.h> sub(x,y,z) int x,y,*z; { *2=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

考题 运行下列程序,窗体中的显示结果是:x= 。Option Compare DatabaseDim x As IntegerPrivate Sub Form_Load()x=3End SubPrivate Sub Commandll_ Click()Static a As IntegerDim b As Integerb=x^2funl x,bfunl x,bMsgBox〝x=〞xEnd SubSub funl(ByRef y As Integer,ByVal z As nteger)y=y+zz=y-zEnd Sub

考题 下列程序的运行结果是( )。 Private Sub Commandl_Click() a=1.5 b=1.5 Call fun(a,B)Print a,b End Sub Private Sub fun(x,y) x=y*y y=y+x End SubA.2.25 3.75B.1.5 2.25C.1.5 0.75D.0.75 1.5

考题 以下程序的输出结果是______。 sub(int x,int*y) {*y=*y-x;} main() { inta=1,b=2; sub(a,B) ;sub(b,A) ; printf("%d,%d\n",a,B) ; }A.1,0B.1,2C.0,1D.2,1

考题 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 0B.1 1C.2D.1 2

考题 单击命令按钮时,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\10 End sub Private Sub Commandl_Click() Dim x AS Integer,y AS Integer x=12:y=24 Call Procl(x,y) Print x;y End subA.12 24B.2 24C.2 3D.12 2

考题 要想在过程Proc调用后返回形参x和Y的变化结果,下列定义语句中正确的是( )。【考点5过程调用与参数传递】A.Sub Proc(x as Integer,Y as Integer)B.Sub Proc(ByVal x as Integer,Y as Integer)C.Sub Proc(x as Integer,ByVal Y as Integer)D.Sub Proc(ByVal x as Integer,ByVal Y as Integer)

考题 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

考题 在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程: Private Sub sub1(ByVal x As Integer, ByVal y As Integer, ByVal z As Integer) z=x * x+ y * y End Sub Private Sub Command1_Click() Dim a As Integer a = 8 Call sub1(1, 2,A)Print a End Sub 程序运行后,单击命令按钮,则窗体上显示的内容是A.8B.2C.5D.11

考题 运行下列程序:Dim x, yPrivate Sub Form_Click( )x = 1: y = 1: z = 1fun1 (1)Print x; y; zEnd SubPrivate Sub fun1(a)x = a + x: y = a + x: z = a + yEnd Sub单击窗体后,则输出结果是( )。A.1 1 1B.2 3 1C.2 3 4D.2 2 1

考题 运行下列程序:Dim bPrivate Sub Form_Click( )a = 1: b = 1Call fun1(a)Print "X = X = ; a; ,Y = ; bEnd SubPrivate Sub fun1(a)b = 2 * aa = 3 * bEnd Sub单击窗体后,则在窗体上显示的结果是( )。A.X = 1,Y = 1B.X = 2,Y = 6C.X = 6,Y = 2D.X = 6,Y = 1

考题 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

考题 以下定义的过程()是按“传值”方式传递参数的。A、Public Sub Sum(x,y)B、Public Sub Sum(ByVal x, ByVal y)C、Public Sub Sum(x As Integer,y As Integer)D、Public Sub Sum(x%, y%)

考题 下列定义abc过程的语句,正确的是()A、Dim Sub abc(x,y)B、Public abc(x,y)C、Private Sub abc(x,y)As IntegerD、Sub abc(x,y)

考题 单选题下列定义abc过程的语句,正确的是()A Dim Sub abc(x,y)B Public abc(x,y)C Private Sub abc(x,y)As IntegerD Sub abc(x,y)