相关试题
单选题 The GMDSS defines four sea areas based on the ______.
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 The GMDSS must combine all various subsystems, because ______.①they all have different limitations with respect-to coverage; ② they all have different limitationsin the technology they use;③different system sapply to different ships
单选题 GMDSS is the abbreviation of ______.
单选题 The GMDSS is composed of ______.
单选题 The GMDSS is composed of ______.
单选题 The GMDSSis a world-wide communication network combining ______ with ______.