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

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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

单项选择题

The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.

A.right at the bow
B.one-third the length of the vessel from the bow
C.one-half the length of the vessel from the bow
D.two-thirds the length of the vessel from the bow