单项选择题
A single-screw vessel going ahead tends to turn more rapidly to port because of propeller（）.
A.discharge current B.suction current C.sidewise force D.thrust
单项选择题 A record of the types and strengths of steels used on a ship must be included in the（）.
单项选择题 A liner in riveted construction of a vessel is a(n)（）.
单项选择题 A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）.
