●对有序表R［0.29］进行二分查找的平均查找长度为 (55) 。

●多媒体技术的关键在于解决动态图像和声音的存储与传输问题。若不经压缩，以VGA640×480点阵存储一幅256色的彩色图像大约需 (56) MB存储空间，以9600bit／s的速度传输这幅图像大约需 (57) 秒，按我国电视PAL标准每秒25幅，一张650MB的光盘可容纳约 (58) 秒的这样图像画面，播放时传送速率应不低于每秒 (59) MB。模拟声音数字化存放是通过采样和量化实现的，若采样频率44.1kHz，每个样本16位，存放一分钟双声道的声音约占 (60) MB存储空间。

●向端用户提供尽可能宽的网络接入是引起人们广泛关注的技术。 (61) 只能提供128kbit／s的接入数据速率， (62) 则是通过电话双绞线向端用户提供更高信息传输带宽的一种接入技术，而采用 (63) 和电缆调制解调器(Cable Modem)也可获得和后者同样数量级的接入带宽。第3代无线通信的 (64) 可提供高达2Mbit／s的接入数据速率。光纤到户，即 (65) ，则是将来的一种发展方向。

●A typical (66) language contains an applicative sublanguage which approximates the mathematical abstractions of"timeless"functions applied to "spaceless" values, where the actual operation sequences and use of storage space during expression evaluation are organized behind the (67) ．In this setting,values are data structures of low volume,typically a few computer words or less,which means that an illusion of spacelessness can be realized by having (68) results during expression evalution stored at the discretion of the language implementation, and effecting parameter (69) and (70) operations through value copying．

●Traditional structured analysis techniques focus upon the flow of(71)within a system Object-oriented analysis emphasizes the building of real-world models It examines requirements from the perspective of the classes and objects found in the vocabulary of the(72)domain

●主存储器和CPU之间增加高速缓冲存储器(Cache)的目的是 (1) 。