【单选题】Franklin gives brief mention in the Autobiography to the death of:
A.
His son, which happened in 1736
B.
His wife, which happened in 1774
C.
His father, which happened in 1718
D.
His daughter, which happened in 1743
【简答题】Dr. McGoman and Dr.Marzluff claim that the ability to recognize faces gives crows and their relatives ______.
【单选题】interface AA{ double f(double x,double y); } class BB implements AA{ 【代码】//重写接口的方法 int g(int a,int b){ return a+b; } } 【代码】处的正确语句是()。
A.
double f(double x,double y){ return x*y; }
B.
public int f(int x,double y){ return x*y; }
C.
public double f(double x,int y){ return x*y; }
D.
public double f(double x,double y){ return x*y; }
【单选题】分析以下代码: double sum = 0; for (double d = 0; d < 10; sum +=sum + d) { d +=0.1; }
A.
该程序有语法错误,因为for循环中的调整变量语句不正确。
B.
该程序存在语法错误,因为for循环中的控制变量不能为double类型。
【单选题】关于维生素B12的叙述,不正确的是( )
C.
维生素B12的吸收需一种称做内因子的糖蛋白的协助
D.
维生素B12与四氢叶酸在甲基传递中均起着重要作用
【简答题】给定程序中,函数fun的功能是:用函数指针指向要调用的函数,并进行调用。当调用正确时,程序输出:x1=5.000000,x2=3.000000,x1*x1+x1*x2=40.000000。请选择在下画线处填入正确的语句,使程序得出正确的结果。#include double f1(double x){ return x*x; }double f2(double x, double y){ ...
【简答题】给定程序中,函数fun的功能是:根据形参i的值返回某个函数的值。当调用正确时,程序输出:x1=5.000000,x2=3.000000,x1*x1+x1*x2=40.000000。请选择在下画线处填入正确的语句,使程序得出正确的结果。#include double f1(double x){ return x*x; }double f2(double x, double y){ ret...
【单选题】给定程序中,函数fun的功能是:用函数指针指向要调用的函数,并进行调用。当调用正确时,程序输出: x1=5.000000,x2=3.000000,x1*x1+x1*x2=40.000000。 请选择在下画线处填入正确的语句,使程序得出正确的结果。 #include double f1(double x) { return x*x; } double f2(double x, double ...
【单选题】有如下两个类定义: class XX{ private: double X1; protected: double x2; public: doublex3; ); clase YY:protected XX{ private: doubley1; protected: doubley2; public: double y3; }; 在类YY中保护成员变量的个数是( )。
【单选题】Dr. Franklin gives hard tests. Her tests are more difficult than _______________.