第一台商业3D打印机是Charles Hull年开发

Main hull, by its different position, will be separated into section, section and section

（）refers to the depth of a vessel below the waterline，measured vertically to the lowest part of the hull，propellers or other reference points.

______ refers to the depth of a vessel below the waterline ， measured vertically to the lowest part of the hull ， propellers or other reference points ．

13. The crew said they had survived on the upturned hull (船身), sleeping ________ in a compartment (隔间) the size of a double bed.

CV点存在于下列哪个元素上（ ）。 A: 其他选项都不对 B: Curve C: Span D: Hull

Which of the following marine insurance policies is normally purchased by the cargo owner?（）. A: Hull B: Cargo C: Protection and Indemnity D: Pollutio

熔融沉积成型工艺的发明人是( )。 A: Chuck Hull B: 颜永年 C: Scott Crump D: Scott Karl

曲线上的editpoint是在曲线之外的hull线上，通过它可以判断曲线的span数量

The ship owner’s liability for cargo damage is covered under what marine insurance policy?（）. A: Hull B: Cargo C: Protection and Indemnity D: Pollutio