单项选择题
If your vessel is equipped with a radiotelephone，what must also be aboard?（）
A.Certificate of Inspection B.List of ship stations C.Copy of ship to shore channels D.Radio station license
单项选择题 If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens? （）
单项选择题 I have no choice（）to put such remarks.
单项选择题 I have altered course to 245 degrees for（）.
