Прочитайте текст и заполните пропущенные места. An ultrasonic ……is reflected as an echo by an object. By measuring the time it takes the …… to travel to the object and return ……, we can find out exactly how far away the object is.
139. Choose the synonym of the underlined word
Altından xətt çəkilmiş sözün sinonimini seçin.
Выберитесинонимподчеркнутогослова. In recent years automatic systems have been rapidly advancing in importance in all fields of engineering.
140. Choose the synonym of the underlined word
Altından xətt çəkilmiş sözün sinonimini seçin.
Выберитесинонимподчеркнутогослова. Mechanization is to be distinguished from more primitive tool using.