Dual electro-hydraulic steering units usually operate ______.
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
第1题
A.low and at the shortest distance
B.low and at the furthest distance
C.high and at the shortest distance
D.high and at the furthest distance
第2题
A.Cylinder head valves
B.Ports
C.Turbo chargers
D.Bleeder valves
第3题
A.Light blue haze
B.Light brown haze
C.Light gray haze
D.Perfectly clear
第4题
A.A defective ignition system
B.Low lube oil level
C.Weak valve springs
D.Too heavy a load
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