Dual electro-hydraulic steering units usually operate ______.(1.0)
A.with both pumps on line at the same time B.with one pump on standby C.with the follow-up gear disconnected D.only when the rudder is moved amidships正确答案B
Dual electro-hydraulic steering units usually operate ______.(1.0)
A.with both pumps on line at the same time B.with one pump on standby C.with the follow-up gear disconnected D.only when the rudder is moved amidships正确答案B