简述肝细胞瘤。

A. vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide
B. vertical distance from the chart sounding datum to the ocean bottom
C. average height of water over a specified period of time
D. average height of all low waters at a place

A. 第三方人员
B. 厂家
C. 当次变更局方接口人
D. 代维