Most of us couldn't live without our coffee maker, let alone our fridge or -- perish the thought -- even our toilet. These spoils of modern civilization are truly marvels of technology. And, whether you're a handyman or a homemaker, knowing the ins-and-outs of your appliances is important. It can make you a smarter consumer and save you money in repairs. But before you attempt to break open that air conditioner, take our quiz to see how you fare in appliance knowledge.