The GMDSS must combine all Various subsystems, because ______.①they all have different limitations with respect to coverage; ②they all have different limitations in the technology they use; ③ different systems apply to different ships
查看答案
The GMDSS includes two sub-systems: satellite system and ______.
A. GPS system
B. NAVTEX system
C. terrestrial radio system
DSC system
Which of followings is not included in the GMDSS?
A. Distress alert.
B. DSC call.
C. Broadcast of MSI.
D. Ship’s weather observation report.
The followings are used in the GMDSS except ______.
A. the INMARSAT system
B. VHF, MF and HF DSC systems
C. the COSPAS-SARSAT system
D. AIS systems
What is the minimum requirement of a GMDSS operator in sea area A1?
A. General Operator’s Certificate.
B. First Class Radio Electronic Certificate.
C. Second Class Radio Electronic Certificate.
D. Restricted Operator’s Certificate.
微信支付 
支付宝支付