supply clean air to the measuring compartment of the units for more accuracy
generaate the pressure required for the extraction of the oil mist from the
generate the pressure required for the extraction of the oil mist from the crankcase
supply clean air to the measuring track of the units for more accuracy
第1题：
下面程序的运行结果是
#include＜iostream.h＞
class base{
protected:
int a;
public:
base( ) {cout ＜ ＜ "0";}
};
class base l: virtual base{
public:
base l ( ) {cout ＜ ＜"1";}
};
class base 2: virtual base{
public:
base2 ( ) {cout ＜ ＜"2";}
};
class derived: public base 1, public base2{
public:
derived( ) {cout ＜ ＜ "3";}
};
void main( )
{
derive obj;
cout ＜ ＜ endl;
}
A．0123
B．3120
C．0312
D．3012
第2题：
下面程序的输出结果为：Base:: fun，请将程序补充完整。
include ＜iostream.h＞
class Base{
public:
【 】 fun(){cout＜＜"Base::fun"＜＜end1:}
class Derived : public Base{
public:
【 】 fun(){ cout＜＜"Derived::fun"＜＜end1; }
};
int main()
{
Base a,*pb;
Derived b;
pb = &b;
pb-＞fun();
return 0;
}
第3题：
有如下程序 #include ＜iostream＞ using namespace std; class Base { protected: Base( ){cout＜＜'A'; } Base(char c) { cout＜＜c; } }; class Derived: public Base { public: Derived(char c){ cout＜＜c; } }; int main( ){ Derived d1 ('B'); return 0; } 执行这个程序屏幕上将显示输出
A．B
B．BA
C．AB
D．BB
第4题：
有以下程序：
include＜iostream＞
using namespace std；
class Base
{
public：
Base()
{
K＝0；
}
int x；
}；
class Derivedl：virtual public Base
{
public：
Derivedl()
{
x＝10；
}
}；
class Derived2：virtua1 public Base
第5题：
以下程序的执行结果为______。
include＜iostream＞
using namespace std;
class base
｛
public：
virtual void who()
｛
cout＜＜"base class"＜＜endl;
｝
｝;
class derivel：public base
｛
public：
void who()
｛
cout＜＜"d
第6题：
有如下程序： #include ＜iostream＞ using namespace std; class Base { public: Base(int x=0) { cout＜＜x; } } class Derived: public Base{ public: Derived(int x=0) { cout＜＜x; } private: Base val; }; int main() { Derived d(1); return 0; }程序的输出结果是
A．0
B．1
C．1
D．1
第7题：
general acid-base catalysis
第8题：
下列程序中划线处正确的语句是( )。 # include ＜iostream＞ using namespace std； class Base { public： void fun(){cout＜＜"Base:: fun" ＜＜endl；} }； class Derived：public Base { void fun() { ______ ∥显式调用基类的函数fun() cout＜＜"D
A．fun()；
B．Base．fun()；
C．Base::fun()；
D．Base- ＞fun()；
第9题：
有如下程序： #include＜iostream＞ using namespace std; class BASE { public: ～BASE(){cout＜＜"BASE";} }; class DERIVED:public BASE { public: ～DERIVED(){cout＜＜"DERIVED";} }; int main(){DERIVEDx;retum 0;} 执行后的输出结果是
A．BASE
B．DERIVED
C．BASEDERIVED
D．DERIVEDBASE
第10题：
有如下程序： #include ＜iostream＞ using namespace std; class BASE{ public: ～BASE(){cout＜＜"BASE";} }; class DERIVED:public BASE{ public: ～DERIVED(){cout＜＜"DERIVED";} }; int main(){DERIVED x;return 0;} 执行后的输出结果是
A．BASE
B．DERIVED
C．BASEDERIVED
D．DERIVEDBASE