單項(xiàng)選擇題Those ship’s tanks that are particularly important for trimming the ship are the（）.

A.domestics
B.settlers
C.deeps
D.peaks


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

3.單項(xiàng)選擇題The welds used to attach stiffeners to a plate are known as（）.

A.butt welds
B.seam welds
C.fillet welds
D.plate welds

4.單項(xiàng)選擇題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

5.單項(xiàng)選擇題The type of joint formed when a third small plate is riveted over two plates butted together is called a（）.

A.butted joint
B.lap joint
C.strap joint
D.stringer joint