操作系统中,进程在下列哪种情况下从运行状态转为就绪状态()。
A)进程被调度选中
B)时间片用完
C)等待某一事件
D)等待的事件发生
计算机网络中的结点在相互通信时必须遵循统一的()。
A.软件规范
B.网络协议
C.路由算法
D.安全规范
WLAN技术使用的传输介质是(20)。
(20)A.双绞线
B.光线
C.同轴电缆
D.无线电波
Ravi, like many project (1) , had studied the waterfall model of software development as the primary software life-cycle (2) . He has all set to use it for an upcoming project, his first assignment. However, Ravi found that the waterfall model could not be used because the customer wanted the software delivered in stages, something that implied that the system had to be delivered and built in (3) and not as (4) . The situation in many other projects is not very different. The real world rarely presents a problem in which a standard process, or the process used in a previous project, is the best choice. To be the most situation, an existing process must be (5) to the new problem. A development process, even after tailoring, generally cannot handle change requests. To accommodate change requests without losing control of the project, you must supplement the development process with a requirement change management process. 空白(4)处应选择()
A、parts
B、modules
C、software
D、awhole
关于顾渚紫笋茶的表述正确的是( )。
A、产于长兴县
B、唐朝就列为贡品
C、中国十大名茶之一
D、我国产制历史最悠久的名茶
用象形文字写成的罕见的艺术珍品《东巴厕谱》、《神路图》出自( )的壁画。
A、白族
B、纳西族
C、傣族
D、彝族