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.
Keeping your refrigerator at the optimal temperature, by keeping door-openings to a minimum, will also help with efficiency. Refrigerators should be between 34 degrees and 36 degrees, but anything over 40 degrees subjects your food to spoilage. For your freezer, the optimal temperature is 0 degrees to 10 degrees.