The distress message should be preceded by _________.
A. PAN PAN
B. SECURITE
C. MAYDAY
D. MEDICO
查看答案
Without the permission of _________, a ship earth station can not access the INMARSAT system.
A. International Maritime Organization
B. International Telecommunication Union
C. the nearest coast station to the ship
D. International Mobile Satellite Organization
The frequency 518kHz will be used to transit _________ and _________ warnings in NAVTEX.
A. navigational/typhoon
B. traffic/meteorological
C. marine/hurricane
D. navigational/ meteorological
In addition to meeting the requirement of Sea area Aland A2, every ship engaged on voyage in Sea area A4shall be provided with _________.
A. MF radio installation with DSC
B. SES
C. MF/HF radio installation with DSC
D. 2187.5kHz watch receiver
A distress alert can be relayed from an RCC by
A. major coast stations only
B. satellite and terrestrial
C. MF/HF and VHF stations
D. COSPAS-SARSAT
微信支付 
支付宝支付