单项选择题
Which cargo is considered volatile（）.
A.Bunker C B.Turkey-red oil C.Sweet oil D.Iso-Propylamine
单项选择题 When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.
单项选择题 When general cargo with different amounts in each draft is involved，the checker must use the （）.
单项选择题 What type of liquid is used in the liquid P/V breaker（）.
