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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

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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

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