题目内容

在直流稳态电路中电容相当于(),电感相当于()。

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过渡过程是含( )的电路由一种稳态转换为新的稳态所经历的过程。过渡过程的快慢与( )有密切关系。

读程序写结果(1)。#include class Base{ int i;public:Base(int n){cout <<"Constucting base class" << endl;i=n;}~Base(){cout <<"Destructing base class" << endl;}void showi(){cout << i<< ",";}int Geti(){return i;}};class Derived:public Base{ int j;Base aa;public:Derived(int n,int m,int p):Base(m),aa(p){cout << "Constructing derived class" <

写出下列程序运行结果:#include using namespace std;class A{int x;public:int z;void setx(int i){x=i;}int getx(){return x;}};class B: public A{int m;public:void setvalue(int a,int b,int c){setx(c);z=b;m=a;}void display(){cout<

若类A和类B的定义如下:class A{int i,j;public:int geti(){return i;}};class B: public A{int k;public:void make(){k=i*j;}};则上述中, ( )是非法的表达式。

A. k=i*j
B. int k;
C. return i;
D. void make();

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