Not the same.
Medium-sized ovens usually contain upper, middle, and lower heights to choose from, as long as the recipe does not specify the upper and lower temperatures, the baking sheet can be placed in the middle; if the upper temperature is high and the lower temperature is low, unless the upper and lower temperatures can be adjusted independently of the oven, then it is usually the upper and lower temperatures are divided by two, and then the baking sheet can be placed on the upper level, but it is necessary to keep an eye on the surface of the burnt surface.
Note: Mid-range and high-end products should have at least three grill pan positions, close to the top, close to the bottom and in the center. Also look for ease of cleaning inside the oven.
Extended Information
The food baked in the oven will not contain the carcinogen triple tetraphenylpropylpyrimidium, which is only produced during the combustion process. The oven uses the high temperature generated by the resistance wire to bake the food, there is no combustion process, so there will be no carcinogens produced.
But Mr. Zhao admitted that the absence of carcinogens does not mean that the food baked in the oven is absolutely safe, because the general use of the oven to bake meat at home, the meat will be simmered first, or constantly spread on the top of the sauce, which contains the ingredients of monosodium glutamate (MSG). The process of oven roasting, meat proteins and MSG will produce denaturation, denaturation of the resulting substances are also harmful to the human body.
"The so-called denaturation is burnt and charred. Many people like this burnt taste, but regular consumption of denatured protein is very harmful to the human body." Therefore, Mr. Zhao suggested that people can use the oven to roast meat to eat, but do not eat it often, and you should pay attention when roasting to try to avoid burnt.
People's Daily Online - Oven baked food can cause cancer? Experts say it does not cause cancer, but should be less baked
Baidu Wikipedia - Oven