통신영어 및 교통지리전파전자통신기사 · 2005년05월29일 · 70/100
70.Choose the most suitable one to translate the following sentence into English.(정답률:알수없음)
1
You must keep radio silence in this area unless you have message about the casualty.정답
2
You have not to silence radiocommunication in this area except a message for the casualty.
3
You have to keep radiocommunication silent in this area except in case of a message for the casualty.
4
You may keep radio silence in this area unless you have to messages for the casualty.