假定list1=[3, 4, 5, 20, 5, 25, 1, 3], 则在执行list1.extend([34, 5])之后list1的值为( )。? [25, 20, 5, 5, 4, 3, 3, 1, 34, 5]|[1, 3, 3, 4, 5, 5, 20, 25, 34, 5]|[1, 3, 4, 5, 20, 5, 25, 3, 34, 5]|[3, 4, 5, 20, 5, 25, 1, 3, 34, 5]
假定list1=[3, 4, 5, 20, 5, 25, 1, 3], 则在执行list1.extend([34, 5])之后list1的值为( )。? [25, 20, 5, 5, 4, 3, 3, 1, 34, 5]|[1, 3, 3, 4, 5, 5, 20, 25, 34, 5]|[1, 3, 4, 5, 20, 5, 25, 3, 34, 5]|[3, 4, 5, 20, 5, 25, 1, 3, 34, 5]
25℃,1atm条件下,Zn(s)+2HCl(aq) →ZnCl2(aq)+H2(g)
25℃,1atm条件下,Zn(s)+2HCl(aq) →ZnCl2(aq)+H2(g)
下面程序段的运行结果是( )。 A: t i=0,a[]={3,4,5,4,3}; B: { C: i]++; D: hile(a[++i]<5); E: r(i=0;i<5;i++) F: intf("%d ",a[i]); G: 4 5 6 5 4 H: 3 4 5 4 3 I: 4 5 5 5 4 J: 4 5 5 4 3
下面程序段的运行结果是( )。 A: t i=0,a[]={3,4,5,4,3}; B: { C: i]++; D: hile(a[++i]<5); E: r(i=0;i<5;i++) F: intf("%d ",a[i]); G: 4 5 6 5 4 H: 3 4 5 4 3 I: 4 5 5 5 4 J: 4 5 5 4 3
If5/<em>x</em>+4/5=1,whatisthevalueof<em>x</em>? A: -25/4 B: -4 C: -5/4 D: -1/5 E: 25
If5/<em>x</em>+4/5=1,whatisthevalueof<em>x</em>? A: -25/4 B: -4 C: -5/4 D: -1/5 E: 25
下列代码段执行后的结果是()int[] a = { 1, 3, 5, 2, 4 };int j = 4;for (int i = 0; i <; 5; i++) { a[i] = a[j]; j--;}for (int i = 0; i <; 5; i++) System.out.print(a[i] + " ");[/i][/i] A: 1 2 3 4 5 B: 5 4 3 2 1 C: 4 2 5 2 4 D: 4 2 5 3 1
下列代码段执行后的结果是()int[] a = { 1, 3, 5, 2, 4 };int j = 4;for (int i = 0; i <; 5; i++) { a[i] = a[j]; j--;}for (int i = 0; i <; 5; i++) System.out.print(a[i] + " ");[/i][/i] A: 1 2 3 4 5 B: 5 4 3 2 1 C: 4 2 5 2 4 D: 4 2 5 3 1
有以下程序段,其运行结果是_______。int i,j;for(i=3;i>=1;i--){for(j=1;j<=2;j++)printf("%d",i+j);printf("\n");} A: 2 3 43 4 5 B: 4 53 42 3 C: 4 3 25 4 3 D: 2 33 44 5
有以下程序段,其运行结果是_______。int i,j;for(i=3;i>=1;i--){for(j=1;j<=2;j++)printf("%d",i+j);printf("\n");} A: 2 3 43 4 5 B: 4 53 42 3 C: 4 3 25 4 3 D: 2 33 44 5
若2y-5x=0,则x:y等于( ) A: 2:5 B: 4:25 C: 5:2 D: 25:4
若2y-5x=0,则x:y等于( ) A: 2:5 B: 4:25 C: 5:2 D: 25:4
下面程序运行后输出的结果是()int i=0, j=9;do{if(i++>--j)break;}while(i<4);System.out.println("i="+i+"and j="+j); A: i=4 and j=4 B: i=5 and j=5 C: i=5 and j=4 D: i=4 and j=5
下面程序运行后输出的结果是()int i=0, j=9;do{if(i++>--j)break;}while(i<4);System.out.println("i="+i+"and j="+j); A: i=4 and j=4 B: i=5 and j=5 C: i=5 and j=4 D: i=4 and j=5
25℃时,氢氟酸的电离常数为10-3.15,基元反应H+(aq)+F-(aq)=HF(aq)的速率常数为1011.00 dm3.mol-1.s-1因此电离反应HF(aq)=H+(aq)+F-(aq)的速率常数为
25℃时,氢氟酸的电离常数为10-3.15,基元反应H+(aq)+F-(aq)=HF(aq)的速率常数为1011.00 dm3.mol-1.s-1因此电离反应HF(aq)=H+(aq)+F-(aq)的速率常数为
Public Sub Proc(a%( )) Static i% Do a(i) = a(i) + a(i + 1) i = i + 1 Loop While i < 2 End Sub Private Sub Command1_Click( ) Dim m%, i%, x%(10) For i = 0 To 4: x(i) = i + 1: Next i For i = 1 To 2: Call Proc(x): Next i For i = 0 To 4: Print x(i);: Next i End Sub A: 3 4 7 5 6 B: 3 5 7 4 5 C: 2 3 4 4 5 D: 4 5 6 7 8
Public Sub Proc(a%( )) Static i% Do a(i) = a(i) + a(i + 1) i = i + 1 Loop While i < 2 End Sub Private Sub Command1_Click( ) Dim m%, i%, x%(10) For i = 0 To 4: x(i) = i + 1: Next i For i = 1 To 2: Call Proc(x): Next i For i = 0 To 4: Print x(i);: Next i End Sub A: 3 4 7 5 6 B: 3 5 7 4 5 C: 2 3 4 4 5 D: 4 5 6 7 8