航海英語液化氣體與IGC規(guī)則單項選擇題每日一練(2019.07.28)

來源：考試資料網(wǎng)

1 On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.

2 Name one major advantage of transporting gas under refrigeration.（）

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

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

5 The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.