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计算机系统由两大部分组成，它们是（)A．系统软件和应用软件B．主机和外部设备C．硬件系统和软件系统D

计算机系统由两大部分组成，它们是()

A．系统软件和应用软件

B．主机和外部设备

C．硬件系统和软件系统

D．输入设备和输出设备

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第2题

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第3题

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第4题

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第5题

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第7题

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第8题

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