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
更多“All VHF marine band radios operate in the simplex mode，which means that（）.”相关的问题
A、A.Commercial radio broadcasts B、B.The Coast Guard on scheduled marine information broadcasts C、C.VHF-FM continuous marine weather broadcasts provided by the National Weather Service D、D.All of the above
A、机长/VHF-1，副驾驶／VHF-2，观察员／VHF-2 B、机长／VHF-2，副驾驶／VHF-1，观察员／VHF-1 C、机长／VHF-1，副驾驶／VHF-1，观察员／VHF-1 D、机长／VHF-1，副驾驶／VHF-2，观察员／VHF-1
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