航海英語GMDSS單項選擇題每日一練(2019.01.16)

來源：考試資料網(wǎng)

1 The existing terrestrial radio system has a number of basic flaws which（）.

2 The Network Coordination station for the INMARSAT-A coast stations in the Pacific ocean region is in（）.

3 All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radiobeacons (EPIRB)（）?

4 EGC safetyNet transmits（）types of messages for mariners.

5 The Inmarsat SES operator can choose the most suitable CES according to（）.