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单选题
DVD-ROM属于（ ）。
A
大容量可读可写外存储器
B
大容量只读外部存储器
C
CPU可直接存取的存储器
D
只读内存储器
参考答案
参考解析
解析：
DVD是外接设备，ROM是只读存储，上面的数据只能被读取而不能被写入或修改。
DVD是外接设备，ROM是只读存储，上面的数据只能被读取而不能被写入或修改。
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