单项选择题
To ensure the ship’s general stability，（）.
A.she's loaded a little deeper forward B.she's loaded a little deeper aft C.she has not any ballast at all D.the cargo is properly distributed throughout the ship
单项选择题 The vertical distance between G and M is used as a measure of（）.
单项选择题 The trim and stability booklet must be approved by the（）.
单项选择题 The time required to incline from port to starboard and back to port again is called（）.
