【多选题】监视与诊断过程中的信号检测必须满足以下( )的要求。 A 随机性 B 在线性 C 实时性 D 一致性
【单选题】I was told that my father had emailed me the other day, but I didn't receive ________. [ ]
【单选题】----I didn't receive any e-mail from you,why? ----( )
A.
Oh,my compuer is down.
【单选题】I was on __________ last week and didn't receive your fax.
【单选题】在下列有关Windows操作系统(这里指Windows 95及其以后的版本)的多任务处理功能的叙述中,正确的是( )。
A.
在多任务处理过程中,宏观上前台任务与后台任务都能得到CPU的响应(处理)
B.
由于CPU具有并行执行指令的功能,所以操作系统才能同时进行多个任务的处理
C.
如果用户只启动一个应用程序,那么该程序就可以自始至终地独占CPU
D.
Windows操作系统采用协作方式支持多个任务的处理
【单选题】He said he had called me to return home, but I didn't receive _____. [ ]
【单选题】I wrote to that company a week ago, but I didn't receive any reply.
【简答题】Getting plenty of exercise is very important. I enjoy swimming very much. Last summer I went to the beach every day. I plan to go there this summer too, but I may not be able to, I have a new job. Som...
【单选题】I ______ a letter from him since he left. [ ]
【单选题】I______ from him since he left. A. didn't receive B. haven't got C. didn't have D. haven't heard