题目：
Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.
A.Vessels nearer the distress vessel acknowledge receipt
B.Vessels nearer the distress vessel fail to acknowledge receipt
C.Even you have not reveived the distress
D.Even the vessel in distress expressly prohibit you from providing any salvage service
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
