单项选择题
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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Auserreportsthattheircellphonebatteryisdeadandcannotholdacharge.Whichofthefollowingshouldbedonewhendisposingoftheoldbattery？（）
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C.Place battery in a sealed plastic bag.
D.Disassemble the battery.
