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? A particular kind of heating device. Identifying different varieties of quartz. The benefits of new reflectors. Using solar energy for heat. What had the instructor probably been discussing in the previous class? Quartz heater. Sympathetic vibration. Convection. Infrared heat. What does the instructor ask the student? He asks her how a quartz heater works. He asks her to explain his design. He asks her to give a definition. He asks her for an example. According to the instructor, how was the quartz heater different from other types of heaters? It is lighter in weigh. It heats only the objects in a room. It is more expensive. It is more common. What is the purpose of a reflector on a quartz heater? It measures the temperature of a room. It moves air around the room. It directs radiation at objects. It collects sunlight. Loading … [irp][related_posts_by_tax title=""]
