單項選擇題

If you are transmitting a distress message by radiotelephone you should（）.

A.use English language
B.always use the International Code
C.preface it by the word "Interco"
D.follow the transmission with the radio alarm signal

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單項選擇題

How is “radio silence” imposed?（）

A.By the On Scene Coordinator (OSC)
B.By the Coast Earth Station (CES) controlling the distress communications on that frequency
C.It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
D.It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel

單項選擇題

Distress signals may be（）.

A.red flares
B.smoke signals
C.sound signals
D.Any of the above