单项选择题
A.LEFT MAIN LANGDING GEAR AXLE CONCENTRATOR FAILUREB.LEFT INBOARD ELECTRIC BRAKE ACTUATION CONTROLLER FAILUREC.RIGHT ELECTRIC BRAKE POWER SUPPLY UNIT FAILURED.N/A
A.PRESSURE TRANSDUCERB.TORSION LINKC.LOCK LINKD.N/A
A.顺序活门控制B.软件控制C.钢索控制D.N/A