单项选择题

SOLAS ships shall be equipped with（）.

A.an EGC receiver only
B.a satellite communication system
C.a HF radio system
D.a VHF with DSC system

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B.Chinese/some distress calls
C.the language decided by Administration/all distress calls
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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