单选题 A vessel is operating in the Western Atlantic. To initiate a ship-to-shore telephone contact to a shoreside party in Dalian city of China, whose number is 411-8472-9640, through Beijing Earth Station, using automatic service by telephone, a valid INMARSAT dialing sequence is ______.
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单选题 Which statement is false regarding a GMDSS-equipped ship?
单选题 The communication system used by the GMDSS includes ______.
单选题 GMDSS is the abbreviation of ______.
单选题 What is the primary purpose of the GMDSS?
单选题 The GMDSSis a world-wide communication network combining ______ with ______.
单选题 The GMDSS defines four sea areas based on the ______.
单选题 The GMDSS is composed of ______.
单选题 The GMDSS is composed of ______.