问题
单项选择题
The line of computing jobs waiting to be run on a computer system might be a ______. The jobs are serviced in the order of their arrival, that is, the first in is the first out.
A．queue
B．stack
C．array
D．record
答案
参考答案：A
解析： 计算机系统上等待运行的计算作业队伍可以排成一个队列，按到达的先后顺序进行处理，即先进先出。