题型:选择题 ----Did you visit the famous museum? ----No. We ______ it, but we spent too much time shopping.[ ]A. shouldn’t have visited B. must have visitedC. could have visited D. can’t have visited 查看答案
题型:单项选择题 下列程序的输出结果是 #include<iostream.h> class Myclass{ public:Myclass(int i=0,int j=0){ x=i; y=j;}void show( ) {cout < <"x=" < < x < <" " <"y=" < < y < < endl;}void show( ) const{cout < <"x=" < <" " < <"y=" < < y < < endl;} privated: int x; int y;};void main( ) { Myclass my1(3,4) ;const my2(7,8) ;my1.show( ) ;my2.show( ) ;}A.x=4,y=3;x=7,y=8B.x=3,y=4;x=7,y=8C.x=7,y=8;x=4,y=3D.x=8,y=7;x=7,y=8 查看答案
题型:单项选择题 下列有关承载能力和强度的说法中,正确的是( )。A.回弹弯沉值越大,表示承载能力越小 B.回弹模量越大,表示承载能力越小C.CBR值越大,表示强度越小 D.压碎值越大,表示强度越大 查看答案