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标准以太网指的是 ( ) A: 10 BASE 5 B: 10 BASE 2 C: 10 BASE T D: 100 BASE T

（6-2）定义如下Base类，能在(1)处正确调用Base的构造方法。 class Base{ int x,y; Base(int x){} Base(int x,int y){ //(1)调用Base的构造方法 } }

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如何能使程序调用Base类的构造方法输出"base constructor"; class Base{ Base(int i){ System.out.println("base constructor"); } Base(){  } } public class Sup extends Base{ public static void main(String argv[]){ Sup s= new Sup(); //One } Sup() { //Two } public void derived() { //Three } }

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把从键盘上输入的十进制数(long型)以二进制到十六进制形式输出。请填空。 int main(void) { char b[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F',}; int c[64],d,i=0,base; long n; printf("enter a number : "); scanf("%ld",&n); printf("enter new base : "); scanf("%d",&base); do{ c[i]=____; i++; n= n╱base; } while (n!=0 ); printf("transmite new base: "); for (--i;i>=0;--i){ d=c[i]; printf("%c",____);} return 0;}"

给出下面的代码段 public class Base{ int x, y; static int z; public Base(int a,int b)<br/>{ x=a; y=b; } } 以下代码错误的是?(). A: Base b=new Base(); <br/>b.z=10; B: Base b=new Base(1,2); <br/>b.z=10; C: Base.z=10; D: Base b=new Base(1,2);<br/>b.x=2;