Which of the following is the main point of the text?
[A] The development of the Internet.
[B] The possibility of space research.
[C] Universal information superhighway.
[D] The technological advances of the Mars mission.
第1题:
有如下程序:#include<iostream>using namespace std;class Point{public: static int number;public: Point(){number++;} ~Point(){number--;}};int Point::number=0;void main(){ Point*ptr; Point A,B; { Point*ptr_point=new Point[3]; ptr=pb_point; } Point C cout<<Point::number<<endl; delete[]ptr; }运行时输出的结果是
A.3
B.4
C.6
D.7
第2题:
下列程序的输出结果为:
bjectid=O
biectid=1
请将程序补充完整。
include<iostream>
using namespace std;
class Point
{
public:
Point(int xx=0,int yy=0){X=xx;Y=yy;countP++;}
~Point(){countP--;}
int GetX(){return X;}
int GetY(){return Y;}
static void GetC(){cout<<"Object id="<<countP<<endl;}
private:
int X,Y;
static int countP;
};
______//静态数据成员的初始化
int main()
{
Point::GetC();
Point A(4,5);
A.GetC();
return 0;
}
第3题:
有以下程序: #include <iostream> using namespace std; #define PI 3.14 class Point { private: int x,y; public: Point(int a,int b) { x=a; y=b; } int getx() { return x; } int gety() { return y; } }; class Circle : public Point { private: int r; public: Circle(int a,int b,int c):Point(a,b) { r=c; } int getr() { return r; } double area() { return PI*r*r; } }; int main() { Circle c1(5,7,10); cout<<cl.area()<<endl; return 0; } 程序执行后的输出结果是
A.314
B.157
C.78.5
D.153.86
第4题:
有如下程序: #inClude<iostream> using namespaCe std; Class Point{ publiC: statiC int number; publiC: Point( )t.number++;} ~Point( ){number--;} }; , int P0int::number=0; int main( ){ Point *ptr: Point A,B; Point*ptr_point=new Point[3]; ptr=ptr_point;’ } Point C; Cout<<Point:::number<<endl; delete[]ptr; return 0; } 执行这个程序的输出结果是( )。
A.3
B.4
C.6
D.7
第5题:
有如下程序:#include <iostream>using namespace std;class point{ int x, y;public: point( int vx, int vy ) { x = vx; y = vy; } point ( ) x = 0; y= 0; } point operator+( point p1 ) { point p; int px = x+ p1.x; int py = y + p1.y; return point( px, py ); point operator-( point p1 ) { point p; int px = x -p1.x; int py = y - p1.y; return point ( px, py ); } void print() { cout<<x<<" , "<<y<<end1; }};int main (){ point p1(10, 10 ), p2( 20, 20 ); p1 = p1 - p2; p1.print (); return 0;} 执行后的输出结果是
A.10,10
B.20,20
C.10,20
D.30,30
第6题:
有如下程序: #include <iostream> using namespace std; class point { int x, y; public: point( int vx, int vy ) { x = vx; y = vy; } point ( ) { x = 0; y = 0; } point operator+( point pl ) { point p; int px = x + p1.x; int py = y + p1.y; return point( px, py ); } point operator-( point p1 ) { point p; int px = x - p1.x; int py = y - p1.y; return point( px, py ); } void print() { cout<<x<<", "<<y<<end1; } }; int main () { point pl ( 10, 10 ), p2 ( 20, 20 ); p1 = p1 + p2; p1.print (); return 0; } 执行后的输出结果是( )。
A.10,10
B.20,20
C.10,20
D.30,30
第7题:
第8题:
Which of the following network topologies BEST describes a VPN? ()(Select TWO)
第9题:
Which of the following does not affect security on a wireless access point?()
第10题:
A vegetable market in which the various items are grouped according to place of origin.
A wheat field in which different varieties of wheat are planted to yield a crop that will bring the maximum profit.
A flower stall in which the various species of flowers are arranged according to their price.
A housing development in which the length of the front struts supporting the porch of each house increases as houses are built up the hill.
第11题:
i = m;
i = b;
i = p.a;
i = p.change(30);
i = t.b.
第12题:
Drawing a diagram to show the text structure
Giving the text an appropriate title
Transferring information from the text to a diagram
Finding out all the unfamiliar words
第13题:
有如下程序:
#include<iostream>
using namespace std;
class Point{
int x, y;
public:
Point(int x1=0, int y1=0):x(x1), y(y1){}
int get(){return x+y;)
};
class Circle{
Point center;
int radius;
public:
Circle(int CX, int cy, int r):center(cx, cy), radius(r){}
int get(){return center. get()+radius;}
};
int main(){
circle c(3, 4, 5);
cout<<c. get()<<end1;
return ():
}
运行时的输出结果是( )。
A) 5
B) 7
C) 9
D) 12
A.
B.
C.
D.
第14题:
有以下程序: #include <iostream> using namespace std; class Point' { public: void SetPoint(int x,int y); void Move(int xOff,int yOff); int GetX() { return X; } int GetY() { return Y; } private: int X,Y; }; void Point::SetPoint(int x, int y) { X=x; Y=y; } void Point: :Move(int xOff, int yOff) X+=xOff; Y+=yOff; } int main () { Point p1; p1.SetPoint(1,2); p1.Move (5, 6); cout<<"Point1 is ("<<p1.GetX()<<','<<p1.GetY()<<")"<<end1; return 0; } 执行后的输出结果是( )。
A.Point1 is (6,8)
B.Point1 is (1,2)
C.Point1 is (5,6)
D.Point1 is (4,4)
第15题:
有如下程序:#include <iostream>using namespace std;class point{ int x, y;public: point( int vx, int vy ) { X=vx; y=vy; } point() { x=0; y=0; } point operator+ ( point p1 ) { point p; int px = x + p1.x; int py = y+ p1.y; return point( px, py ); } point operator-( point p1 { point p; int px = x - p1.x; int py = y - p1.y; return point( px, py ); } void print() { cout<<x<<","<<y<<end1; }};int main(){ point p1( 10, 10 ), p2( 20, 20 ); p1 = p1 + p2; p1.print(); return ();}执行后的输出结果是( )。
A.10, 10
B.20, 20
C.10, 20
D.30, 30
第16题:
What values are printed when the following C program is executed?
int i = 8;
void main(void)
(
第17题:
A. Mesh
B. Point to point
C. Point to multipoint
D. Ring
第18题:
若有以下程序: #include <iostream> using namespace std; #define PI 3.14 class Point { private: int x,y; public: Point(int a,int b) { x=a; y=b; } int getx() { return x; } int gety() { return y; } }; class Circle : public Point { private: int r; public: Circle(int a, int b,int c) :Point(a,b) { r=c; } int getr() { return r; } double area() { return PI*r*r; } }; int main() { Circle c1(5,7,10); cout<<c1.area()<<end1; return 0; } 程序执行后的输出结果是( )。
A.314
B.157
C.78.5
D.153.86
第19题:
第20题:
A wireless access point supports up to 20 clients. Which of the following describes this wirelessnetwork?()
第21题:
You are designing a strategy to ensure that DNS queries always take the most efficient route to get resolved. Which action or actions should you perform?()
第22题:
The approach of psychohistorians to historical study is currently in vogue even though it lacks the rigor and verifiability of traditional historical method.
Traditional historians can benefit from studying the techniques and findings of psychohistorians.
Areas of sociological study such as childhood and work are of ~little interest to traditional historians.
The psychological assessment of an individual’s behavior and attitudes is more informative than the details of his or her daily life.
第23题:
The period of time in which the set point and the control point coincide
The periodic change between the set point and the control point
The variable difference between the set point and the control point
The constant difference between the set point and the control point