单项选择题
A thrust block is designed to（）.
A.absorb the shock of wave pressure at the bow B.be placed between the engines and the foundation to absorb the vibration C.transmit the thrust of the engine to the propeller D.transmit the thrust of the propeller to the vessel
单项选择题 A simplified construction plan may be included in the ship construction portfolio provided it adequately defines the（）.
单项选择题 A Kort nozzle is a(n)（）.
单项选择题 A hydraulic accumulator aboard a ship is designed to（）.
