单选题 An embedded device is a ________ that has devised to perform some certain functions. It is dedicated to execute a particular task that might require processors that are powerful．
【正确答案】 B
【答案解析】 一个嵌入式设备是一种用来实现特定功能的系统，可以使得执行某些特定功能的效率更加高效。