Paragraf Tamamlama 43. Soru
🏆 Bu Testin Birincisi: Bengu
Başarı Yüzdeniz : 100 %
43.
…………… . The letters have no meaning, but in Morse code the combination has a pronounced rhythm which attracts immediate attention. All ships observe two silence periods every hour, listening on certain frequencies to ensure that any distress signal, however weak, will be picked up.
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43
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