你可能感興趣的試題

Most hydraulic steering gears are fitted with relief valves which（）

A.function when the rudder is amidships
B.relieve excess whip pressure from the hydraulic oil system
C.protect the piping assembly from external rudder shock
D.relieve excessive telemotor pressure

單項(xiàng)選擇題

On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?（）

A.Rudder angle indicator
B.Follow-up gear
C.Electric transmitter
D.Rudder angle limit switch