How does the coffee machine heat hot water?

To make coffee, you must first connect the power supply, and the coffee machine must be connected to the A/C socket. It is forbidden to use defective power cord. When plugged in, turn on the power switch of the coffee machine. Because all new machines have the smell of plastic, which is harmful to human body. Therefore, before using the electric coffee pot for the first time, you should boil two pots of boiling water to remove the bad taste.