航海英語液化氣體與IGC規(guī)則單項(xiàng)選擇題每日一練(2019.01.22)

來源：考試資料網(wǎng)

1 Gasoline fumes tend to（）.

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

3 The shut off valve at the gasoline tank which can be operated from outside the tank space （）.

4 According to the Chemical Data Guide，when burning，the grade B flammable liquid，carbon disulfide produces（）.

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