单项选择题
The Emergency Position Indicating Radiobeacon on a cargo vessel must be stowed（）.
A.in an inside passageway B.in an approved bracket C.so that it is accessible from the bridge of the vessel D.so that it will float free if the vessel sinks
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（）.
单项选择题 The Class A EPIRB transmits a signal（）.
