题目内容
Software design is a (66) process. It requires a certain (67) of flair on the part of the designer. Design can net be learned from a book. It must be practiced and learnt by experience and study of existing systems. A well (68) software system is straight forward to implement and maintain, easily (69) and reliable. Badly (68) software systems, although they may work are (70) to be expensive to maintain, difficult to test and unreliable. 66（）
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静态成员函数仅能访问 (33) 。静态数据成员的初始化必须在 (34) 。 33（）
多媒体计算机中的媒体信息是指 (56) ，多媒体技术的主要特性有 (57) 。目前音频卡具备的功能有 (58) 。在多媒体计算机中常用的图像输入设备是 (59) 。国际标准MPEG-2采用了分层的编码体系，提供了4种技术，它们是 (60) 。 57（）
Software design is a (66) process. It requires a certain (67) of flair on the part of the designer. Design can net be learned from a book. It must be practiced and learnt by experience and study of existing systems. A well (68) software system is straight forward to implement and maintain, easily (69) and reliable. Badly (68) software systems, although they may work are (70) to be expensive to maintain, difficult to test and unreliable. 69（）
直接存储器访问(DMA)是一种快速传送大量数据常用的技术。工作过程大致如下所述。1．向CPU申请DMA传送。2．向CPU申请DMA控制器接管 (1) 的控制权。3．在DMA控制器的控制下，在存储器和 (2) 之间直接进行数据传送，在传送过中不需要 (3) 的参与。开始时需提供要传送的数据的 (4) 和 (5) 。4．传送结束后，向CPU返回DMA操作完成信号。 5（）
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