航海英語船舶強(qiáng)度資料單項選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 For safety reasons，when assistance towing（）.

2 How do you operate a portable CO₂ fire extinguisher?（）

3 How can you estimate the position of a tropical storm’s center?（）

4 How is the annual rate of change for magnetic variation shown on a pilot chart?（）

5 For means of abandonment of a ship，which type of embarkation does not require prior approval by the Coast Guard?（）