单项选择题
A.swing 35°right or left B.remain locked in its last position C.move to the mid-ship position automatically D.jam against the rudder emergency stops
According to Regulations, a power driven auxiliary stee...
单项选择题According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?（）
A.6 knots B.7 knots C.9 knots D.12 knots
单项选择题According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）
A.7 knots B.10 knots C.15 knots D.20 knots
The follow-up gear on an electro-hydraulic steering gea...
单项选择题The follow-up gear on an electro-hydraulic steering gear（）
A.relieves excessive fluid pressure B.takes the pump off stroke when the desired rudder angle is attained C.synchronizes wheel position with the rudder position D.returns the rudder to midposition when the wheel is released
