单项选择题
A.easy access to its storage compartment B.replacement of the battery without exposure to the weather C.it to float free if the vessel sinks D.it to remain attached to the vessel
During an annual FCC inspection（）.A.all required docume...
单项选择题During an annual FCC inspection（）.
A.all required documents and publications may have to be produced B.licensed GMDSS radio operators may be required to demonstrate equipment competencies C.all required equipment must be fully operational D.All of the above
Class C EPIRBs are（）.A.manually activated and operate o...
单项选择题Class C EPIRBs are（）.
A.manually activated and operate on maritime (VHF) channels B.automatically activated and operate on maritime (VHF) channels C.manually operated and detected by satellite D.automatically operated and detected by satellite
Class A EPIRBs are required on（）.A.self-propelled，inspe...
单项选择题Class A EPIRBs are required on（）.
A.self-propelled，inspected vessels B.towing vessels C.recreational vessels D.uninspected passenger vessels
