题目：
硬盘是目前PC必配的存储设备。以下关于硬盘性能的叙述中，错误的是（）。
A．内部数据传输率是指主机和磁盘缓存之间数据传输的速度
B．平均等待时间与磁盘的旋转速度有关，其值等于盘片转半圈的时间
C．平均寻道时间与磁头在磁道间移动的速度有关
D．存储容量取决于硬盘的磁头数、柱面数、扇区数以及扇区容量
答案：
参考答案：A
解析：
内部数据传输率是指硬盘磁头与缓存之间的数据传输率，也就是硬盘将数据从盘片上读取出来，然后存储在缓存内的速度。
硬盘是目前PC必配的存储设备。以下关于硬盘性能的叙述中，错误的是（）。A．内部数据传
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