单项选择题

Which of the following is a pointing device offered in laptops?（）

A. Light pen
B. Mouse
C. Optical mouse
D. Touch pad

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单项选择题

Which of the following statements about an LCD screen is not true?（）

A. An LCD screen consumes more power than a CRT screen.
B. An LCD screen display may present high-quality images but only to viewers sitting directly in fron of the screen.
C. Currently, all laptops use LCD screens.
D. An LCD screen is considerably more expensive than a CRT screen.

单项选择题

Which of the following devices will be plugged into an AGP slot on a motherboard?（）

A. Video card
B. Sound car
d C. Modem card
D. Network card
E. Magic I/O card

单项选择题

What does AMR stand for?（）

A. Audio Modem Riser
B. Audio Modem Rectifier
C. Audio Multiplication Rectifier
D. Audio Modern Riser