航海英語液化氣體與IGC規(guī)則單項選擇題每日一練(2019.05.01)

來源：考試資料網(wǎng)

1 Where is thicker plating usually found in the construction of integral tanks on a ship? （）

2 When fueling has been completed（）.

3 Which is NOT a safety precaution to be observed during the loading of LFG?（）

4 A vessel behaves as if all of its weight is acting downward through the center of gravity，and all its support is acting upward through the（）.

5 What is used to test a tank for oxygen content?（）