单项选择题
Rudder position is shown on the bridge by the（）
A.rudder angle indicator B.follow-up gear C.telemotor position D.relief valves
单项选择题 In an elector-hydraulic steering system, rudder shock is limited by（）
单项选择题 Most hydraulic steering gears are fitted with relief valves which（）
单项选择题 On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?（）
