How（）the cargo at loading port?A.aboutB.inC.w

Channel 13 (156.65 MHz)，the designated bridge-to-bridge...

单项选择题Channel 13 (156.65 MHz)，the designated bridge-to-bridge channel，may NOT be used to（）.

A.exchange navigational information between vessels
B.exchange navigational information between a vessel and a shore station
C.conduct necessary tests
D.exchange operating schedules with company dispatcher

All VHF marine band radios operate in the simplex mode，...

单项选择题All VHF marine band radios operate in the simplex mode，which means that（）.

A.only one person may talk at a time
B.only two persons may talk at the same time
C.the radio only transmits
D.the radio only receives

A mark or place at which a vessel comes under obligator...

单项选择题A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

A.Way point
B.Receiving point
C.Reporting point
D.Closest Point

VHF通信

How（）the cargo at loading port?