下列FORTRAN表达式中,值为.TRUE.的是( )。

A:NOT.(.TRUE.OR.TRUE.AND..FALSE.) B:NOT..FALSE..AND..FALSE. C:NOT.(.TRUE..AND..FALSE.) D:NOT.FALSE.AND.TRUE.EQV.FALSE.

Which of these statements is true ( )

A:About half of Panama lies east of Miami. B:Panama is squeezed into the narrowest portion of Central America. C:Panama offers the lowest point in the North American continental divide. D:All of the above are true.

下列逻辑运算结果为“true”的是______。

A:false or not true B:true or not true C:false and not true D:true and not true

有如下程序:
#include<iostream>
using namespaee std;
class Pair
int m;
int n;
public:
Pair(int i,int j):m(i),n(j)
boot operator>(pair P)const;//需在类体外给出定义

int main( )
Pair pl(3,4),p2(4,3),p3(4,5);
cout<<(pl>p2)<<(p2>p1)<<(p2>p3)<<(p3>p2);
retum 0;

运算符函数operator>的功能是比较两个Pair对象的大小,当左边对象大时,返回true,否则返回false。比较规则是首先比较两对象的m成员,m大者为大;当m相等时比较n,n大者为大。程序输出0101,下列对运算符重载函数的正确定义是

A:bool Pair::operator>(Pair P)eonst B:bool Pair::operator>(Pair P)
if(m!=P.m)return m>p.In;return n>p.n; if(m!=P.m)return m>p.m;return n>p.n;
C:bool Pair::operator>(Pair P)eonst D:bool Pair::operator>(Pair P)
if(m>p.m)return true;return n>p.n; if(Ul>p.m)return true;return n>p.n;

return true;

resize(300,200)
add(Panel6_2)

which descnption is NOT true

A:Personal computer has not the features of the larger system. B:Large systems offer higher processing speeds for user and return more data than PCs. C:Output devices take output results from the CPU in machine-coded form and conven them into a form that used by people. D:The input/output devices and auxiliary storage units of a computer system are called peripherals.

有如下程序: #include<iostream> using namespaee std; class Pair{ int m; int n; public: Pair(int i,int j):m(i),n(j){ } boot operator>(pair P)const;//需在类体外给出定义 }; int main( ){ Pair pl(3,4),p2(4,3),p3(4,5); cout<<(pl>p2)<<(p2>p1)<<(p2>p3)<<(p3>p2); retum 0; } 运算符函数operator>的功能是比较两个Pair对象的大小,当左边对象大时,返回true,否则返回false。比较规则是首先比较两对象的m成员,m大者为大;当m相等时比较n,n大者为大。程序输出0101,下列对运算符重载函数的正确定义是

A:bool Pair::operator>(Pair P)eonst B:bool Pair::operator>(Pair P) {if(m!=P.m)return m>p.In;return n>p.n;} {if(m!=P.m)return m>p.m;return n>p.n;} C:bool Pair::operator>(Pair P)eonst D:bool Pair::operator>(Pair P) {if(m>p.m)return true;return n>p.n;} {if(Ul>p.m)return true;return n>p.n;}

有如下程序:
#include<iostream>
using namespace std;
class Pair{
int m;
int n;
public:
Pair(int i,int j): m(i),n(j){}
bool operator>(Pair p)const; //须在类体外给出定义
};
int main( ){
Pair p1(3,4),p2(4,3),p3(4,5);
cout<<(p1>p2)<<(p2>p1)<<(p2>p3)<<(p3>p2);
return 0;
} 运算符函数operator>的功能是比较两个Pair对象的大小,当左边对象大时,返回true,否则返回false。比较规则是首先比较两对象的m成员,m大者为大;当m相等时比较n,n大者为大。程序输出0101,下列对运算符重载函数的正确定义是()

A:bool Pair::operator>(Pair const { if(m! =return m>m; return n>n;} B:bool Pair::operator>(Pair { if(m! = return m>m; return n>n;} C:bool Pair::operator>(Pair const { if(m> return true; return n>n;} D:bool Pair::operator>(Pair { if(m> return true; return n>n;}

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