单选题When a grounding strap is not available, a technician can ground by touching the computer’s:（）Apower supply.BCPU fan.Cmemory chips.Dmotherboard.
单选题
When a grounding strap is not available, a technician can ground by touching the computer’s:（）
A
power supply.
B
CPU fan.
C
memory chips.
D
motherboard.
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