单项选择题
（）cargo is unloaded by huge grabs on cranes or by large grain elevators.
A. Dry B. Dry general C. Dry bulk D. Liquid
单项选择题 At the discharging port, tankers pump the oil ashore using （）.
单项选择题 At the （）port, tankers pump the oil ashore using her own pumps.
单项选择题 The oil is usually pumped into ship at the loading port by（）.
