單項(xiàng)選擇題

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

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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

單項(xiàng)選擇題

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