【单选题】【消耗次数：1】
随机存储器是指什么？
①
在工作时内容不能改变
②
以任意次序读写任意存储单元所用的时间相同
③
只能以某种预先确定的顺序来读写存储单元
④
不是根据地址而是根据所存储信息的全部特征可部分特征存取
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相关题目
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存储器的读写速度排列顺序正确的是（ ）。
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RAM>Cache>硬盘>软盘
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Cache>RAM>硬盘>软盘
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Cache>硬盘>RAM>软盘
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RAM>硬盘>软盘>Cache
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heavy than
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so heavy than
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adriver
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