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
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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 -
单项选择题
The strictest load line regulations apply to（）.
A.gas carriers
B.freighters (break-bulk)
C.passenger ships
D.tankers -
单项选择题
The shearing stresses on a ship’s structure are usually greatest at（）.
A.the bow
B.the stern
C.midships
D.the ship's quarter-length points
