A technician is attempting to mitigate micro power outages, which occur frequently within the area of operation. The outages are usually short, with the longest occurrence lasting five minutes. Which of the following should the technician use to mitigate this issue?
正解:B
A battery backup, also known as an uninterruptible power supply (UPS), is a device that provides backup power during a power outage. When the power goes out, the battery backup provides a short amount of time (usually a few minutes up to an hour, depending on the capacity of the device) to save any work and safely shut down the equipment.