下列关于loop back interface的说法（）是不正确的？

A:loop back interface是CISCO路由器上缺省端口 B:loop back interface一个永远不会DOWN的逻辑端口 C:loop back interface是一个做自环测试的端口 D:loop back interface是对端使用LOOPBACK命令测试链路后本端的端口状态

Although the bulk of industry resources and energies have focused on developing the fastest (71) or slickest (72) more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices, (73) processing and vitual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the (74) as invisible as possible. (75) represents the next evolutionary step for the interface.

A:inconsistent B:independent C:interface D:incompatible

Although the bulk of industry resources and energies have focused on developing the fastest (1) or slickest (2) more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices, (3) processing and vitual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the (4) as invisible as possible. (5) represents the next evolutionary step for the interface.

A:inconsistent B:independent C:interface D:incompatible

下列是定义一个接口ITF的程序，在横线处应填入的选项是( )。
public interface ITF

public static final double PI=3.14；
public ______ double area(double a，double b)；

A:interface B:static C:final D:abstract

下列是定义一个接口ITF的程序，在横线处应填入的选项是( )。
publid interface ITF

public static final double PI=3.14;
public______double area(double a，double B) ;

A:interface B:static C:final D:abstract

下列是定义一个接口ITF的程序，在横线处应填入的选项是 ( )
public interface ITF　　
public static final double PI=3.14；
public( )double area(double a，double b)；

A:interface B:static C:final D:abstract

下列是定义一个接口ITF的程序，在横线处应填入的选项是 ( ) public interface ITF　　{ public static final double PI=3.14； public( )double area(double a，double b)； }

A:interface B:static C:final D:abstract

下列是定义一个接口ITF的程序，在横线处应填入的选项是( )。 publid interface ITF { public static final double PI=3.14; public______double area(double a，double B) ; }

A:interface B:static C:final D:abstract