综合考虑行车排水和通风,地下公路隧道的坡度i应是()
A: 0.1%≤i≤1%
B: 0.3%≤i≤3%
C: 0.4%≤i≤4%
D: 0.5%≤i≤5%
A: 0.1%≤i≤1%
B: 0.3%≤i≤3%
C: 0.4%≤i≤4%
D: 0.5%≤i≤5%
举一反三
- 某事故树的最小割集为:{x1},{x2,x3},{x2,x4,x5},则结构重要程度为()。 A: I(4)>;I(2)>;I(3)>;I(1)=I(5) B: I(1)>;I(2)>;I(3)>;I(4)=I(5) C: I(1)>;I(5)>;I(3)>;I(4)=I(2) D: I(5)>;I(3)>;I(2)>;I(1)=I(4)
- 事故树的最小径集为:{x1,x2,x3,x4}、{x5,x6}、{x7}{x8}其结构重要度排序为:()的特征。 A: IΦ(7)= IΦ(8)>IΦ(5)= IΦ(6)>IΦ(1)= IΦ(2)= IΦ(3)=IΦ(4) B: IΦ(7)= IΦ(8)>IΦ(5)= IΦ(1)>IΦ(6)= IΦ(2)= IΦ(3)=IΦ(4) C: IΦ(7)= IΦ(8)>IΦ(5)= IΦ(3)>IΦ(6)= IΦ(1)=IΦ(2)=IΦ(4) D: IΦ(5)=IΦ(7)= IΦ(8)>IΦ(3)>IΦ(6)= IΦ(1)=IΦ(2)=IΦ(4)
- 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
- 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
- 下面程序运行后,输出结果是( )。#include ;main( ){ int a[10]={1,2,3,4,5,6},i,j; for(i=0;i { j=a[i];a[i]=a[5-i];a[5-i]=j;} for(i=0;i}[/i][/i] A: 1 5 4 3 2 6 B: 1 5 3 4 2 6 C: 6 5 4 3 2 1 D: 1 2 3 4 5 6