航海英語(yǔ)搜索用語(yǔ)單項(xiàng)選擇題每日一練(2019.01.14)

來(lái)源：考試資料網(wǎng)

1 The self-contained breathing device should not be used in which situation?（）

2 Which is NOT a part of an anchor?（）

3 A man was sighted as he fell overboard. After completing a Williamson turn，the man is not sighted. What type of search should be conducted?（）

4 The most probable position of the object of a search at any given time is the（）.

5 The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the（）.