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【单选题】
计算机的硬件系统由( )各部分组成A.
控制器、运算器、存储器、输入输出设备
B.
CPU 、主机、显示器、打印机、硬盘、键盘
C.
控制器、显示器、打印机、主机、键盘
D.
主机箱、集成块、显示器、电源、键盘
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