航海英語海上通信基本知識單項選擇題每日一練(2019.11.17)

來源：考試資料網(wǎng)

1 Which of the following statements is TRUE regarding automatic identification systems (AIS) ?（）

2 When my ship arrived there，their ship（）.

3 The Agent promised to keep me（）of how our business was going on.

4 Which of the following statements is TRUE regarding automatic identification systems (AIS)? （）

5 Sorry to have kept you（）for a long time.