单项选择题

多媒体硬件系统的基本组成不包括 (63) 。

A．具有A/D和D/A转换功能
B．高清晰的彩显
C．CD-ROM
D．音箱
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单项选择题
(71) is true regarding simple sort techniques.
A．Both insertion sort and selection sort require O(n)moves.
B．Exchange sort is frequently referred to as a bubble sort.
C．If random data are in an array that is to be sorted, an insertion sort will give the best performance for large elements with small sort items.
D．Exchange sort is the least expensive.
单项选择题
将含100个结点的完全二叉树从根这一层开始，每层从左到右依次对结点编号，根结点的编号为1。编号为49的结点X的双亲编号为 (39) 。
A．24
B．25
C．23
D．无法确定
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