单项选择题
A.the sizes of casks B.various lengths of timber C.structural shapes used in construction D.viscosities of liquid cargoes
The welds used to join shell plates in flush constructi...
单项选择题The welds used to join shell plates in flush construction are known as（）.
A.butt welds B.seam welds C.fillet welds D.continuous welds
The welds used to attach stiffeners to a plate are know...
单项选择题The welds used to attach stiffeners to a plate are known as（）.
A.butt welds B.seam welds C.fillet welds D.plate welds
The type of joint formed when an edge of one plate is l...
单项选择题The type of joint formed when an edge of one plate is laid over the edge of the plate to which it is riveted is a（）.
A.grip joint B.strap joint C.thread joint D.lap joint
