单项选择题
Movement of liquid in a tank when a vessel inclines causes an increase in（）.
A.righting arm B.metacentric height C.height of the uncorrected KG D.natural rolling period
单项选择题 Neglecting friction, you desire to life a 300 kgs weight with a stress on the hauling part of 100kgs.Which of the following tackles would you use ?（）.
单项选择题 Never（）stowed like this.
单项选择题 0f the following, the most important consideration for a tank vessel is（）.
