单选题 ______ belongs to satellite system to promulgate Maritime Safety Information.
相关试题
单选题 What is the primary purpose of the GMDSS?
单选题 The GMDSS is composed of ______.
单选题 Which statement is false regarding a GMDSS-equipped ship?
单选题 The GMDSSis a world-wide communication network combining ______ with ______.
单选题 GMDSS is the abbreviation of ______.
单选题 The GMDSS defines four sea areas based on the ______.
单选题 The GMDSS is composed of ______.
单选题 The communication system used by the GMDSS includes ______.