单项选择题

What is the minimum requirement of a GMDSS operator?

A.GMDSS
B.Third
C.General
D.General
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单项选择题
What is defined as and area, excluding sea areas A1 and A2, within the coverage of an INMARSAT geostationary satellite in which continuous alerting is available?
A.Ocean
B.Sea
C.Sea
D.Coastal
单项选择题
What is defined as an area outside sea areas A1, A2 and A3?
A.AOR-E
B.AOR-W
C.Coastal
B.A4
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