单项选择题

Which of the following is an advantage that a USB mouse has over a PS/2 mouse?（）

A. A USB mouse uses less power
B. A USB mouse is more portable
C. A USB mouse is hot swappable
D. A USB mouse is more secure

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单项选择题
Which of the following will help dissipate heat through the heat sink when upgrading a CPU? （）

A. Case fan
B. Thermal compound
C. Motherboard riser
D. Power supply
单项选择题
Which of the following printers requires a specialized paper in order to operate?（）

A.Thermal
B.Laser
C.Inkjet
D.Impact
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