Flashing, signal, instructions, dashes, steady, acknowledge, relay, code

1. A communication relay is a station that … messages between various points, so as to facilitate communications between units. 2. The idea of flashing dots and … from a lantern was first put in to practice by Captain, later Vice Admiral, Philip Colomb in 1867. 3. His original… , which the Navy used for seven years, was not identical with Morse, but Morse code was eventually adopted with the addition of several special signals. 4. … lights were the second generation of signalling in the Royal Navy, after the flag signals. 5. In air traffic control towers, ... lamps are still used today, as a backup device in case of a complete failure of an aircraft's radio. 6. Light signals can be red, green or white, and … or flashing. 7. Messages are limited to a handful of basic … (e.g. "land", "stop" etc.); they are not intended to be used for transmitting messages in Morse code. 8. Aircraft can ... signals by rocking their wings or flashing their landing lights .

Вспомните функции модальных глаголов и особенности их перевода на русский язык.