Medical technicians include: 1  Cardiovascular technicians, whose duties involve performing echocardiograms, or sonograms of the hearts of patients. 2  Dialysis technicians who are trained to operate dialysis equipment for people with failing kidneys.
1 Maintain your refrigerator between 34Â°F and 40Â°F. Refrigerator thermometers are available to help monitor the temperature inside the appliance. See more on thermometers.  Use food quickly, and don't expect food to remain high-quality for the maximum length of time.
To keep food safe, refrigerators should maintain a temperature between 35 and 38 degrees F and the freezer 0 degrees. Setting the temperature too high puts your food at risk of spoiling and setting it too low wastes energy. If your refrigerator doesn't have a built-in thermometer use an appliance thermometer.