单项选择题
A.an EGC receiver only B.a satellite communication system C.a HF radio system D.a VHF with DSC system
Please use（）for（）.A.English/all distress communications...
单项选择题Please use（）for（）.
A.English/all distress communications B.Chinese/some distress calls C.the language decided by Administration/all distress calls D.Japanese/some distress alerts
Stations in the United States of America are grouped by...
单项选择题Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
A.countries B.states C.names D.groups
At least two two-way VHF radiotelephone apparatus shall...
单项选择题At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
A.200 B.300 C.400 D.800
