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（）.

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

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

单项选择题The safety stopper that prevents the anchor cable from running free if the cable jumps the wildcat is the（）.

A.riding pawl
B.devil's claw
C.buckler plate
D.spill pipe