单项选择题
A.domestics B.settlers C.deeps D.peaks
The words PIPE，BUTT，TUN AND PUNCHEON all refer to（）.A.t...
单项选择题The words PIPE，BUTT，TUN AND PUNCHEON all refer to（）.
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
