CD音频的抽样频率最高可以达到44.1kHz,可以满足绝大多数音乐欣赏者的听觉需求,这是因为()。
A. 一般人的听觉范围最高可以达到44.1kHz
B. 计算机处理器的处理带宽只有44.1kbits/s
C. 一般人的听觉范围最高可以达到20kHz左右
D. 声卡的处理能力只能达到每秒抽样44.1k
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Ravi,like many project__(1)__,had studied the waterfall model of software development as the primary software life-cycle__(2)__.He was 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 suitable,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
下列软件产品中适合作为多媒体创作工具的软件是()。
Authorware
B. Photoshop
Cool Edit Pro
D. 3ds Max
在计算机系统中采用总线结构,便于实现系统的积木化构造,同时可以()
A. 提高数据传输速度
B. 提高数据传输量
C. 减少信息传输线的数量
D. 减少指令系统的复杂性
数据库的视图与基本表之间通过建立__(1)__之间的映像,保证数据的逻辑独立性;基本表与存储文件之间通过建立__(2)__之间的映像,保证数据的物理独立性。 空白(1)处应选择()
A. 模式到内模式
B. 外模式到内模式
C. 外模式到模式
D. 外模式到外模式