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单选题
Which of the following would a company implement to help reduce the cost of electricity？（）
A
Shutdown/power policies
B
Redundant power supplies
C
Use optical mice
D
Social engineering policy
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单选题Which of the following devices is used to provide appropriate voltage to the CPU？（）A
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单选题Which of the following would a company implement to help reduce the cost of electricity？（）A
Shutdown/power policiesB
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Redundant power supplies with one power supply connected and one power supply as a hot spare.B
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单选题A technician does not have power to a PC. Which of the following tools should the technician use to check for electricity?（）A
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They will reduce the price of technology transfer.C
They will help distribute social wealth more evenly.D
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tracert -tB
ipconfig /renewC
ping –tD
nslookup -ttl
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