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  3. The major goal of USB was to define an external expansion bus which makes adding(70)to a PC as easy as hooking up a telephone to

The major goal of USB was to define an external expansion bus which makes adding(70)to a PC as easy as hooking up a telephone to

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问题 The major goal of USB was to define an external expansion bus which makes adding(70)to a PC as easy as hooking up a telephone to a wall-jack. USB 2.0 is an evolution of the USB 1.1(71), providing a higher performance interface.
选项 A、peripherals
B、outside
C、inside
D、beside
答案A
解析 Peripherals意为“外围设备”。
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