航海英語GMDSS單項選擇題每日一練(2019.01.19)

來源：考試資料網(wǎng)

1 （）is a space system using one or more artificial earth satellites.

2 A Class C EPIRB（）.

3 Within the polar areas it is（）to see a satellite in geostationary orbit.

4 The identification character of each Navtex station is regarded as（）to the messages.

5 Any ship with SES can（）and（）through the Inmarsat satellites when sending a distress alert.