【简答题】Martin is a fif-year-old boy. He used to be a “problem child”, but a recent communication with his mother changed his life. In the past, He didn’t give his mother many problems. , after his father...
【单选题】( )The total carrying capacity of ship, measured in long tons or metric tonnes, and is determined as the difference in water displacement when the ship is empty and when it is fully loaded. Cargo Dea...