驾驶人一边驾车，一边吸烟对安全行车无影响。（）

有下列程序：

include＜iostream＞

using namespace std;

class TestClass1

{

public:

TestClass1(){cout＜＜"A";}

};

class TestClass2＜public:TestClass2(){cout＜＜"B";}

};

class TestClass3:public TestClass1{

TestClass2 b;

有下列程序： #include＜iostream＞ using namespace std; class TestClass { int a; public: TestClass(int x)＜a=x;} void show(){cout＜＜a;} }; class TestClass1：publicTestClass { int b; public: TestCla

A．5

B．1

C．0

D．2

有下列程序： #include＜iostream＞ using namespace std; class TestClass { public: virtual void fun1() { cout＜＜"fun1TestClass"; } virtual void fun2() { cout＜＜"fun2TestClass"; } }; class TeSt

A．fun1TeStClass1 fun2TeStClass

B．fun1TestClass1 fun2TestClass1

C．fun1TeStClass fun2TeStClass

D．fun1TestClaSSfun2TestClaSS1

有下列程序： #include＜iostream＞ using namespace std; class TestClass{ protected: TestClass(){cout＜＜'x';} TestClass(char c){cout＜＜c;} }; class TestClassl:public TestClass{ public: TestClassl(char c){cout＜＜c;}

A．y

B．yx

C．xy

D．yy

有如下程序： #include ＜iostream＞ using namespace std; Class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout＜＜

A．1

B．123

C．242

D．244

有以下程序： #include ＜iostream＞ #include ＜string＞ using namespace std; class base { private: char baseName[10]; public: base () { strcpy (baseName, "Base"); } virtual char *myName() {

A．DerivedBase

B．BaseBase

C．DerivedDerived

D．BaseDerived

有下列程序： #include＜iostream＞ Using namespace std; Class Amount{ int amount; public; Amount(int n=O):amount(n){} Int getAmount()const{return amount;} Amount &operator+=(AmountA) {

A．*this

B．this

C．&amount

D．amount

有下列程序：

include＜iostream＞

using namespace std;

class ONE

{

public:

virtual void f(){COUt＜＜"1";}

};

c1assTWO:public ONE

{

public:

TWO(){cout＜＜"2";}

};

class THREE:public TWO

{

pub

有如下程序: #include ＜iostream＞ using namespace std; class AA { public: virtual void f() { cout＜＜ "AA"; } }; class BB : public AA { public: BB() { cout ＜＜ "BB"; } }; cla

A．AA

B．AABBCC

C．BBAABBCC

D．BBBBAACC

有下列程序： #include＜iostream＞ using namespace std; c1ass TestClass { private; char c; public: TestClass(char n):c(n){} ～TeStClass() { cout＜＜c } }; class TestClass1:public TestClass {

A．xy

B．yx

C．x

D．y