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英译汉。8 Twisted pair, coaxial cable and optical fibre are the three main types of transmission medium used for LANs.

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英译汉。9 The Internet is used by millions of people across the world to communicate business and personal information.

10 Telnet allows a user to log into a remote computer as though it were a local system.

The control unit determines the movement of electronic signals between main memory and the arithmetic/logic unit, as well as the control signals between the CPU and input/output devices.

The CPU comprise the control unit and the arithmetic/logic unit (ALU).