单项选择题
The Master shall insure that the Emergency Position Indicating Radiobeacon (EPIRB) is（）.
A.secured inside the wheelhouse B.tested annually C.tested monthly D.secured in the emergency locker
单项选择题 The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.
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（）.
