下列类型中，能够表现一段时期内数据变化的图表类型是（）。

A.柱形图

B.雷达图

C.饼图

D.XY散点图

（）is the vertical distance measured on the vessel’s side amidships from the load water line to the upper side of the freeboard deck or a point corresponding to it.

A.Buoyancy

B.Freeboard

C.Draft

D.Displacement