单项选择题 The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge，and in a few minutes the pressure drops sharply. This could be a result of the（）.

单项选择题 The term Loading and unloading Cargo means（）.

单项选择题 The term DISCHARGE，as it applies to the pollution regulations，means（）.