Вопрос из теста по предмету Английский язык

Question

Определите основную идею текст

Answer

Small size of transistors is their most important advantage.

Answer

Transistors, which are used in electronics, have many commercial applications in the modern world.

Answer

Transistors are much easier to produce, that is why they have recently replaced the vacuum tubes.

Answer

Radio signals improve considerably when modern transistors are used.

Определите основную идею текст: ответ на тест 804736 - Английский язык