【单选题】【消耗次数：1】
内存储器根据工作方式的不同可以分为随机存取存储器和（）。
①
只读存储器
②
光盘存储器
③
磁盘存储器
④
半导体存储器
参考答案：
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存储器分为内存储器和外存储器两类，下列哪种说法正确？
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