Khóa học phần nghe toefl itp 20 câu sau theo bài Hướng dẫn và trắc nghiệm nghe toefl itp thuộc 20 câu sau – Mã 97013438 29 Th9 Press to start in video What is the main topic of the discussion? Using solar energy for heat. The benefits of new reflectors. Identifying different varieties of quartz. A particular kind of heating device. What had the instructor probably been discussing in the previous class? Sympathetic vibration. Convection. Infrared heat. Quartz heater. What does the instructor ask the student? He asks her how a quartz heater works. He asks her for an example. He asks her to explain his design. He asks her to give a definition. According to the instructor, how was the quartz heater different from other types of heaters? It is lighter in weigh. It is more expensive. It is more common. It heats only the objects in a room. What is the purpose of a reflector on a quartz heater? It moves air around the room. It directs radiation at objects. It collects sunlight. It measures the temperature of a room. Loading … Đọc thêm Hướng dẫn và trắc nghiệm nghe toefl itp thuộc 20 câu sau - Mã 99014346[related_posts_by_tax title=""]