单项选择题
A.gas carriers B.freighters (break-bulk) C.passenger ships D.tankers
The shearing stresses on a ship’s structure are usually...
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
The safety stopper that prevents the anchor cable from ...
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
The pivoting point of a fully loaded vessel with normal...
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
