most people know that a balanced yomost là gì Most people know that a balanced diet and regular exercise are very important. However, most people do not know how to exercise properly. Exercising the right way is important for people who are worried about their health and their appearance
thermostat A thermostat is a device that regulates the temperature of a system by turning on or off a heating or cooling source. Learn about the different sensor and control technologies, the history of thermostatic control, and the examples of thermostats in various fields
speech is one of the most important One of the most common types of public speaking is informative speaking. The primary purpose of informative presentations is to share one’s knowledge of a subject with an audience, teaching and providing information for the purpose of expanding the audience’s knowledge. Reasons for making an informative speech vary widely
