第4题: [单项选择]计算机系统中判别是否有中断事件发生应是在 A. 进程切换时 B. 执行完一条指令后 C. 执行P操作后 D. 由用户态转入核心态时 参考答案:B 答案解析:[解析] 处理器每执行完一条指令后,硬件的中断装置立即检查有无中断事件发生,若有中断事件发生,则暂停现行进程的执行,而让操作系统的中断处理程序占用处理器,这一过程称“中断响应”。
第6题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Find a second job as a supplement. B. Come back again to apply for the same job. C. Think about whether she will really resign or not. D. Apply for an additional part-time job. 参考答案:C 答案解析: [听力原文] M: Don’t feel so bad about yourself. It happens. You don’t
really mean you want