漫画《物尽其用》说明，进行创造性思维需要在实践中 A．运用抽象思维 B．注重积

欲计算该病的发病率，正确的公式是

A．n1/N×100%

B．n1/n×100%

C．n2/N×100%

D．n2/n×100%

E．(n1+n2)/n×100%

Attractive ________ the device might seem, “my wife has already done that by herself” was a common response after people seeing it when it was introduced on show this week. 

A．while

B．although

C．as

D．when

Large quantities of solid fuel ______consumed every day and too much carbon dioxide is sent into the air, which in turn _______ the going up of temperature.   [ ]

A. is; results in  

B. are; results in  

C. is; leads to  

D. are; results from

Unix提供了多种通信机制，其中不包括

A．管道通信

B．软中断通信

C．消息通信

D．硬中断通信

1/O接口位于( )。

A．总线和I/O设备之间
B．CPU与I/O设备之间
C．主机和总线之间
D．CPU与主存储器之间