单选题You hear on the radiotelephone the word “Securite” spoken three times. This indicates that（）.Aa message about the safety of navigation will followBa message of an urgent nature about the safety of a ship will followCthe sender is in distress and requests immediate assistanceDyou should secure your radiotelephone
单选题
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
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