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Under normal operating conditions，the rudder is hydraulically locked unless ______．
A.The manual trick wheel is engaged for steering
B.The variable stroke pump is off stroke
C.A rudder order is given by the control system
D.An electric power system failure occurs at the steering gear
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更多 “ Under normal operating conditions，the rudder is hydraulically locked unless ______．A.The manual trick wheel is engaged for steeringB.The variable stroke pump is off strokeC.A rudder order is given by the control systemD.An electric power system failure occurs at the steering gear ” 相关考题
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