The three moving vanes and the three fixed vanes form three pressure chambers
The three moving vanes and the three fixed vanes form six pressure chambers
The three moving vanes and the three fixed vanes form nine pressure chambers
The three moving vanes and the three fixed vanes form twelve pressure chambers
第1题：
In ______ the control action is independent on the output.
A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear control system
第2题：
Which entry is NOT required in the Official Logbook?______
A.Steering gear tests
B.Position of the load line and freeboard upon sailing
C.Commencemet and termination of cargo operations
D.Closure of hatches and sideports upon sailing
第3题：
Which statement is NOT true?
A.While displacement pump works, volume of the working chamber will increase and decrease alternately
B.A gear pump always has two gears
C.Any vane pump will have a rotor within a ring
D.A balanced vane pump has two outlet ports and they are positioned symmetrically
第4题：
modulating the oil flow with the six-way valve
moving the automatic pressure differential valve
moving the receiving telemotor which regulates the tow-way valve
varying the eccentricity of a floating ting or angle of a tilting box
第5题：
The six-way valve opens
The steering service pump motor is stopped
The follow-up gear takes the pump off stroke
The cylinder relief valves bypass oil to the suction side the pump
第6题：
When steering by hand，which of the following may be a functional input to the steering gear as a result of turning the wheel ________．
A.Non-follow-up
B.Rudder adjustment
C.Weather adjustment
D.All the above may be activated
第7题：
a test from the alternative power supply，if installed
timing the movement of the rudder from hard over to hard over
verification that the rudder angle indicator shows the actual position of the rudder(s)
visual inspection of the steering linkage
第8题：
Which statement is NOT true?
A.In a simple vane pump, the rotor and cam ring are exactly concentric
B.Balanced vane pump has an elliptical cam ring
C.Liquid in both gear pump and vane pump are forced out to the outlet.
D.Balanced vane pumps can work at a higher pressure than the simple vane pump
第9题：
the emergency lighting system for muster and abandon ship
air/oil emergency shut-down
M-Eemergency operation
main/auxiliary steering gear changing
第10题：
The three moving vanes and the three fixed vanes form three pressure chambers
The three moving vanes and the three fixed vanes form six pressure chambers
The three moving vanes and the three fixed vanes form nine pressure chambers
The three moving vanes and the three fixed vanes form twelve pressure chambers