The communication system used by the GMDSS includes ______.

The GMDSS defines four sea areas based on the ______.

GMDSS is the abbreviation of ______.

Which statement is false regarding a GMDSS-equipped ship?

What is the primary purpose of the GMDSS?

The GMDSSis a world-wide communication network combining ______ with ______.

The GMDSS is composed of ______.

The GMDSS is composed of ______.

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

The GMDSS includes two sub-systems: satellite system and ______.

Which of followings is not included in the GMDSS?

The followings are used in the GMDSS except ______.

What is the minimum requirement of a GMDSS operator in sea area A2?

What is the minimum requirement of a GMDSS operator in sea area A1?

Which statement is true regarding the radio operator requirements for a GMDSS- equipped ship station?