【单选题】Blinking helps ________ the surface of the eye with tears, washing away dust and other irritants and keeping the sight clear.
【判断题】74LS138译码器可以实现任意三个变量的逻辑函数。( )
【单选题】某机械制造企业(一般纳税人)7月份发生下列主要业务: (1)购进钢材一批已人库,购进额100000元,进项税额17000元,已取得增值税专用发票: (2)购进床单一批(用于职工福利),购进额800元,增值税额136元,已取得增值税专用发票; (3)购进自来水,增值税专用发票上注明的税额为156元; (4)购进配件价款金额20000元,进项税额为3400元,配件入库并已取得增值税专用发票。 (5)本...
【单选题】It was on October 1st ____ new China was founded.
【单选题】Blinking helps ________ the surface of the eye with tears, washing away dust and other irritants and keeping the sight clear.
【简答题】October 1st, 2011 Dear Ann, I hope that you and your children will be here in two weeks. My husband and I will go to meet you at the train station. Our town is small but it is nice and beautiful. You...
【单选题】The Shanghai World Expo came to an end on October 1st,, ________turned out to be a great success. [ ]
【单选题】—When is National Day (国庆节)? —It is _________. [ ]
【单选题】下面关于分时操作系统和批处理多道操作系统的陈述中不正确的是 ( ) 。
A.
前者的目标是对用户请求快速响应;后者的目标是提高机器效率。
B.
前者适合运行比较短小的作业;后者适合运行需要较长时间才能完成的大型作业。
C.
前者适合执行各种不同负载的作业;后者适合执行功能相同的作业。
D.
前者通常用基于时间片的策略实施进程调度;后者通常用基于优先级的策略实施进程调度。