CPU doesn’t mean(68). On a large computer system, a(69)links external devices to a channel.

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问题 CPU doesn’t mean(68). On a large computer system, a(69)links external devices to a channel.

选项 A、the Central Processing Unit
B、Control Unit and Arithmetic/logic Unit
C、a peripheral device
D、the heart of the computer system

答案C

解析 CPU是中央处理器的英文首字母缩写,由控制器和运算器组成,是计算机的心脏,并非外围设备。
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