Определите основную идею текста.

 

  • Penetration depth of microwaves depends on food staff and the frequency.
  • The work of microwave ovens is usually carried out at a certain frequency.
  • Food substances absorb energy from the microwaves in a process called dielectric heating.
  • Microwave is a modern, high quality device developed on contemporary achievements of science used for food preparation.

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.