题目内容

( ) is the control and data processing center of the whole computer system.

A. Memory
B. Motherboard
CPU
D. Bus

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When the computer is turned off, any information in ( ) will be lost.

A. RAM
B. ROM
C. storage
D. memory

( ) is the most popular Bus to be used on a motherboard.

Address Bus
B. Data Bus
Control Bus
D. PCI Bus

Two main components on the motherboard are ( ).

A. memory and circuit boards
B. CPU and memory
C. arithmetic unit and control unit
D. ROM and RAM

( ) does not belong to the output devices.

A. facsimile machine
B. headset
C. speaker
D. microphone