单项选择题 A vessel loads edible oil in a deep tank through a manhole at the midlength of the tank. In order to fill the tank to maximum capacity，what trim should the vessel have?（）.

单项选择题 Movement of liquid in a tank when a vessel inclines causes an increase in（）.

单项选择题 Your tanker is loaded down to her marks，and you find that she has too much trim by the stern. To adjust the trim，you may（）.