单项选择题

Each satellite broadcasts（）traffic on a designated channel.

A.LES
B.ESA
C.NCS
D.EGC

相关考题

At sea，all required GMDSS equipment（other than survival...

单项选择题At sea，all required GMDSS equipment（other than survival craft equipment）must be proven operational by（）.

A.daily testing
B.either A or C
C.operational use of the equipment
D.testing at least every 48 hours

（） operates at a transfer rate of up to 9600 bits per s...

单项选择题（） operates at a transfer rate of up to 9600 bits per second and is telephone，telex and facsimile（fax）capable.

A.INMARSAT A
B.INMARSAT C
C.SafetyNET
D.NAVTEX

（） is not required by bridge-to-bridge communications.A...

单项选择题（） is not required by bridge-to-bridge communications.

A.VHF
B.SART
C.NAVTEX
D.LES