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單項選擇題

Which of the following displays has the HIGHEST Hz frequency?（）

A.Plasma
B.LED
C.CRT
D.LCD

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單項選擇題

Which of the following is a laptop monitor technology that uses a backlight to produce an image on the screen?（）

A. OLED
B. Plasma
C. DLP
D. LCD

單項選擇題

A technician is tasked with clearing all dust covering the fan vents of servers in a small office.Which of the following tools would be the BEST option?（）

A. Small vacuum
B. Air compressor
C. Compressed air can
D. Paint brush

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