题目: 允许多个程序同时进入内存并运行的是A.程序并发执行B.多道程序设计C.程序的顺序执行D.时间片轮转 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0529/d34bb71d13ae4293bd726299d2808a28.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 Traffic restrictions have come into effect in Beijing ______to improve the capital’s air quality and traffic situation for the 2008 Olympics.A.in order thatB.in an attemptC.at an attemptD.in a try 查看答案