单项选择题
The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.
A.NAVTEX B.HYDROLANT/HYDROPAC C.NAVAREA D.SAFESEA
单项选择题 The Emergency Position Indicating Radiobeacon on a cargo vessel must be stowed（）.
单项选择题 The difference between a class A and a class B EPIRB is that the class A EPIRB（）.
单项选择题 The Consol navigation system，used in Russian and Northern European waters，can be used（）.
