Hướng dẫn và trắc nghiệm nghe toefl itp thuộc 20 câu sau - Mã 97013438

Using solar energy for heat.

A particular kind of heating device.

Identifying different varieties of quartz.

The benefits of new reflectors.

Infrared heat.

Convection.

Sympathetic vibration.

Quartz heater.

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 heats only the objects in a room.

It is more common.

It is more expensive.

It is lighter in weigh.

It collects sunlight.

It directs radiation at objects.

It moves air around the room.

It measures the temperature of a room.

Hướng dẫn và trắc nghiệm nghe toefl itp thuộc 20 câu sau – Mã 97013438