单项选择题
A technician needs to upgrade the memory in a laptop. Which of the following memory typeswould be the correct type?（）
A.RIMM
B.DDR RAM
C.SDRAM
D.SODIMM
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A. Frayed or broken cables
B. UPS is unplugged
C. NIC and sound card are disabled in Device Manager
D. Speakers are muted -
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A.USB 1.1
B.eSATA
C.USB 2.0
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