单项选择题
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
A simplified construction plan may be included in the s...
单项选择题A simplified construction plan may be included in the ship construction portfolio provided it adequately defines the（）.
A.areas where special materials are used B.hazardous areas C.location of emergency repair equipment D.type and strength of materials used
A Kort nozzle is a(n)（）.A.hollow tube surrounding the p...
单项选择题A Kort nozzle is a(n)（）.
A.hollow tube surrounding the propeller used to improve thrust B.nozzle attached to a firefighting hose C.intake valve on a diesel engine D.piston cylinder on a diesel engine
A hydraulic accumulator aboard a ship is designed to（）....
单项选择题A hydraulic accumulator aboard a ship is designed to（）.
A.store fluid under pressure B.act as a fluid reservoir C.provide overpressure relief D.replenish fluid to a system
