航海英語液化氣體與IGC規(guī)則單項選擇題每日一練(2019.07.31)

來源：考試資料網(wǎng)

1 A gas-free certificate would usually be issued by a(n)（）.

2 If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）

3 Butadiene，inhibited，is labeled as a（）.

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

5 Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.