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

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单项选择题
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
单项选择题
The system of valves and cargo lines in the bottom piping network of a tanker that connects one section of cargo tanks to another section is called a（）.

A.come-along
B.crossover
C.manifold
D.runaround
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