问题
单项选择题
Vessel in distress（）indicate their position by any method.
A.cannot
B.are not allowed
C.have the right
D.should get permission to
答案
参考答案：C
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Vessel in distress（）indicate their position by any method.
A.cannot
B.are not allowed
C.have the right
D.should get permission to
参考答案：C