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20CD-ROM属于_______· 得分:3分
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20CD-ROM属于_______· 得分:3分
A、主存储器
B、外存储器
C、既是输入设备,又是输出设备
D、易失性存储器
时间:2021-09-02 17:16
关键词:
河北建筑工程学院
计算机文化基础课程
答案解析
B
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