与3.5英寸软盘相比，U盘的优点是（）。
- A.体积小、容量小、速度快
- B.体积大、容量小、速度慢
- C.体积小、容量大、速度慢
- D.体积小、容量大、速度快
正确答案及解析
正确答案
解析
USB闪盘又称为U（优）盘，是使用闪存（Flash Memory）作为存储介质的一种半导体存储设备，采用USB接口标准。闪存盘具有比软盘容量更大（目前常见的优盘容量为256MB、512MB、1GB）、速度更快、体积更小和寿命更长等优点，而且容量在不断增加，价格也在不断下降。根据不同的使用要求，优盘的类型有基本型、加密型和启动型等，在移动存储领域已经取代了软盘（格式化容量为1.44MB）。
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