问题
单项选择题
How long must GMDSS Radio Logs be retained by the licensee when they relate to a distress situation or disaster? （）
A.6 months
B.1 year
C.2 years
D.3 years
答案
参考答案：D
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How long must GMDSS Radio Logs be retained by the licensee when they relate to a distress situation or disaster? （）
A.6 months
B.1 year
C.2 years
D.3 years
参考答案：D
