You hear on the radiotelephone the word “Securite” spoken three times. This indicates that（）.<br>A:a message about the safety of navigation will follow<br>B:a message of an urgent nature about the safety of a ship will follow<br>C:the sender is in distress and requests immediate assistance<br>D:you should secure your radiotelephone

You hear on the radiotelephone the word “Securite” spoken three times. This indicates that（）.
A:a message about the safety of navigation will follow
B:a message of an urgent nature about the safety of a ship will follow
C:the sender is in distress and requests immediate assistance
D:you should secure your radiotelephone

出自：海船船员证

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