航海英語安全通信單項(xiàng)選擇題每日一練(2019.01.24)

來源：考試資料網(wǎng)

1 What is the primary purpose for Digital Selective Calling (DSC)?（）

2 Which is NOT a mandatory part of the shipboard Oil Pollution Emergency Plan?（）

3 Which emergency is required to be covered at the required periodic drills on a fishing vessel?（）

4 What would NOT be a distress signal?（）

5 Which equipment is not a source of locating signals?（）