Укажете видовременную форму сказуемого. Переведите предложение письменно. 1) Some heat-resistant glasses, for example, can be heated until they are red and then plunged into ice water without breaking.2) Its coefficient of friction is the lowest known, which means that machines can be made which do not require lubrication.3) Research centres of Russia are developing new polymer materials to meet the needs of a variety of industries.
1) can be heated - могут быть нагреты
2) is - является
3) are developing - разрабатывают