单项选择题
A.alerting B.on-scene communication C.safety information D.general communication
The quality of EGC message is（）affected by the position...
单项选择题The quality of EGC message is（）affected by the position of the ship, the time of reception and climatic condition.
A.sometimes B.all times C.never D.partly
The information flow of the MSI broadcast must be contr...
单项选择题The information flow of the MSI broadcast must be controlled（）.
A.to avoid mutual interference B.to keep silence C.owing to the time-share nature D.to regulate transmitter power
If EGC receiver shares a same antenna with INMARSAT MES...
单项选择题If EGC receiver shares a same antenna with INMARSAT MES, it means that it can receive MSI（）.
A.from any INMARSAT satellite B.via any appropriate Navtex and EGC station C.via the satellite the MES is tracking D.from any RCC and coast station
