单项选择题
If the ship is alongside the wharf, what kind of（）is used?
A.pilot ladder B.rope ladder C.rod ladder D.accommodation ladder
单项选择题 If the weights are concentrated in the middle part, then（）will happen on board the ship.
单项选择题 I’ll ask the foreman and see（）he’ll agree.
单项选择题 In ballast means that the ship is（）.
