Bluetooth is a （）technology.

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

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

单项选择题Athlon 64 and （）are examples of AMD processors that use the AMD64 architecture.

A.Xeon
B.Pentium
C.Celeron
D.Opteron