111which radio equipment is not necessary for the ships sailing inthe sea area Al?
A: MF DSC.
B: Enhanced group calling receiver. ,
C: Satellite EPIRB.
D: VHF radiotelephone.
A: MF DSC.
B: Enhanced group calling receiver. ,
C: Satellite EPIRB.
D: VHF radiotelephone.
举一反三
- Which of the following equipment is excluded from the required GMDSS equipment? A: 9GHz SART B: weather FAX receiver C: 406MHz EPIRB D: VHF DSC watching receiver
- ______ is sea area A2. A: An area within coverage of INMARSAT geostationary satellites B: An area, excluding sea area A1, within coverage of Medium Frequency (MF) coastal radio stations in which continuous DSC alerting is available C: An area within coverage of VHF coast radio stations in which continuous DSC alerting is available D: The extreme polar regions
- Area A2 is an area. excluding sea area Al. within the coverage of at least one( ) . A: VHF coast station B: MF coast station C: satellite D: RCC
- 船对船报警应该使用（）。 A: Inmarsat-F船站 B: VHF DSC和MF DSC C: SART及VHF DSC D: 卫星EPIRB和VHF EPIRB
- 智慧职教: Ships in areas A3 and A4 will transmit, as appropriate_____ ①a ship-to-shore alert by MES or HF DSC ②a ship to- shore alert by satllite EPIRB③a ship-to-ship alert on MF/VHF DSC