为什么H2O分子的键角既不是90°也不是109°28′而是104.5°
为什么H2O分子的键角既不是90°也不是109°28′而是104.5°
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在通用声明中定义a,在窗体中添加一个命令按钮Command1,编写如下程序代码:DimaAsIntegerSubtest()a=a+1:b=b+1:c=c+1PrintSub:;a;,;b;,;cEndSubPrivateSubCommand1_Click()a=2:b=3:c=4CalltestCalltestEndSub程序运行后,单击命令按钮,窗体中将显示( )A.Sub:3,4,5Sub:4,5,6B.Sub:2,3,4Sub:2,3,4C.Sub:3,1,1Sub:4,1,1D.Sub:1,1,1Sub:1,1,1
运行以下程序后,输出结果为_____________。 Private Sub Command1_Click() a=1:b=2:c=3 Call test(a,b+3,(c)) Print "main:";a;b;c End Sub Private Function test(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub:";p;m;n End Function:A. sub:2 6 4 main:1 2 3B. sub:2 6 4 main:2 2 3C. sub:2 6 4 main:2 6 4D. sub:2 6 4 main:1 6 4
如下图所示的两个窗体:要使其中第一个窗体中的第一个命令按钮来控制显示第二个窗体,第二个命令按钮用来结束程序的运行(两个按钮名称为Command1和Command2)。则以下选项中,对这两个命令按钮编写的事件过程正确的是A.Private Sub Command1 Click() Form2.Show 1 End Sub Private Sub Command2_Click()End End SubB.Private Sub Command1_Click() Show 1 End Sub Private Sub Conunand2_Click() End End SubC.Private Sub Conmmand1_Click() Show 1 End Sub Private Sub Command2_Click() End End SubD.Private Sub Command1_Click()Show 1, Form2 End SubPrivate Sub Command2_Click() End End Sub
下列程序输出的结果是()。includesub1(char a,char b){char c:c=a:a=b:b=c; }sub2(char 下列程序输出的结果是( )。 #include<stdio.h> sub1(char a,char b) {char c:c=a:a=b:b=c; } sub2(char*a,char b) {char c:c=*a;”a=b;b=c;} sub3(char*a,char*b) {char c;c=*a;”a=*b;*b=c;} void main() { char a,b; a='A';b='B':sub1(a,b);putchar(a):putchar(b): a='A';b='B'; sub2(a,b);putchar(a);putchar(b); a='A';b='B'; sub3(a,b);putchar(a);putchar(b); putchar('\n'); }A.ABABABB.ABBBBAC.ABBABAD.ABABBA
下面程序的输出结果是( )。 #include"stdio.h" int sub(int m) { static a=4; a+=m; return a; } void main() { int i=2,j=1,k; k=sub(i); k=sub(j); printf("%d",k); }A.6B.7C.8D.9
在窗体中添加一个命令按钮,编写如下程序: Private Sub Subl(p,m,n) p=p+1:m=m+1:n=n+1 Print"subl:";p;m;n End Sub Private Sub Command1_Click() al=1:b=2:c1=3 Call Subl(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 4B.Sub:2 6 4 Main:2 6 4C.Sub:2 6 4 Main:1 2 3D.Sub:2 6 4 Main:2 2 3
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
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);
执行下面程序,第一行输出结果是【 】,第二行输出结果是47。Option ExplicitPrivate Sub Form_Click( )Dim A As IntegerA=2Call Sub1 (A) End SubPrivate Sub1 (x As Integer)x=x*2+1If x<10 ThenCall Sub1 (x)End Ifx=x*2+1Print xEnd Sub
在窗体中添加一个命令按钮,编写如下程序: Private Sub Test(p,m,n) p=p+1:m=m+1:n=n+1 Print "Sub: ";p;m;n End Sub Private Sub Command1.Click() a1=1:b=2:c1=3 Call Test((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 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
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+1Print "sub1:";p;m;nEnd SubPrivate Sub Command1_Click()a1=1:b=2:c1=3Call Sub1(a,b1+3,c1)Print"Main:";a1;b1;c1End Sub程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
有以下程序includesub1(char a,char B) {char c;c=a;a=b;b=c;}sub2(char *a,char B) { 有以下程序 #include<stdio.h> sub1(char a,char B) {char c;c=a;a=b;b=c;} sub2(char *a,char B) {char c;c=*a;*a=b;b=c;} sub3(char *a,char *B) {char c;c=*a;*a=*b;*b=c;} main() { cha,a,b; a='A';b='B';sub3(a,b) putchar(a);putchar(b); a='A';b='B';sub2(a,b) ;putchar(a);putchar(b); a='A';b='B';sub1(a,b) ;putchar(a);putchar(b); } 程序运行后的输出结果是( )A.BABBABB.ABBBBAC.BABABAD.BAABBA
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 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
人体内O2、CO2进出细胞膜是通过A.单纯扩散B.易化扩散C. 人体内O<sub>2</sub>、CO<sub>2</sub>进出细胞膜是通过A.单纯扩散B.易化扩散C.主动转运D.人胞作用E.出胞作用
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?() A、 0B、 1C、 2D、 Compilation fails.
单选题变直径圆管流,细断面直径d1,粗断面直径d2=2d1,粗细断面雷诺数的关系是( )。ApResub1/sub=0.5Resub2/sub/pBpResub1/sub=Resub2/sub/pCpResub1/sub=1.5Resub2/sub/pDpResub1/sub=2Resub2/sub /p
多选题下列扩展不确定度的表示中,表示形式是正确的是____。ApUsub95/sub=1%(vsubeff/sub=9)/pBpUsubr/sub=1%(k=2)/pCpusubCr/sub=0.5%/pDU=±0.5%(k=1)
单选题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?()A 0B 1C 2D Compilation fails.
单选题永续盘存法公式为()AKsubt/sub+1=Isubt/sub-(1-δ)Ksubt/subBKsubt/sub+1=It+(1-δ)Ksubt/subCKsubt/sub+1=Isubt/sub+(1+δ)Ksubt/subDKsubt/sub+1=Isubt/sub-(1+δ)Ksubt/sub
单选题煤矿井下的有害气体主要是由()、CO2、H2S、NO2、H2、NH3气体组成。ACOBpCHsub4/sub、SOsub2/sub/pCpSOsub2/sub、CO/pDpCO、CHsub4/sub、SOsub2/sub/p
单选题已知某药口服肝脏首过效应很大,改用肌肉注射后( )。Aptsub1/2/sub减少,生物利用度也减少/pBptsub1/2/sub不变,生物利用度增加/pCptsub1/2/sub增加,生物利用度也增加/pDptsub1/2/sub不变,生物利用度减少/pEptsub1/2/sub和生物利用度皆不变化/p
单选题A pIsub2/sub=Isub3/sub/pB pIsub2/sub=4Isub3/sub/pC pIsub2/sub=2Isub3/sub/pD pIsub3/sub=4Isub2/sub/p
多选题下列表示中____的表示形式是正确的。ApUsub95/sub= 1%,vsubeff/sub =9 /pBpUsubr/sub= 1%,k=2 /pCpusubC/sub=0. 5% /pDpusubC/sub=±0 5%.k=1 /p
单选题( )被称为广义货币。ApMsub0/sub/pBpMsub1/sub/pCpMsub2/sub/pDpMsub3/sub/p