A.20
B.40
C.60
D.80
您可能感興趣的試卷
你可能感興趣的試題
A.modulating the oil flow with the six-way valve
B.moving the automatic pressure differential valve
C.moving the receiving telemotor which regulates the tow-way valve
D.varying the eccentricity of a floating ting or angle of a tilting box
A.rudder angle indicator
B.follow-up gear
C.telemotor position
D.relief valves
A.a differential gear
B.return springs
C.a hydraulic accumulator
D.relief valves
A.function when the rudder is amidships
B.relieve excess whip pressure from the hydraulic oil system
C.protect the piping assembly from external rudder shock
D.relieve excessive telemotor pressure
A.Rudder angle indicator
B.Follow-up gear
C.Electric transmitter
D.Rudder angle limit switch
最新試題
The condensers located in various stages of a flash evaporator are cooled by()
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()
During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()
If two A.C.generators are to be operated in parallel, the load is distributed evenly by()
Diesel engine air start system check valves are opened by ()
Flame failure in an automatically fired auxiliary boiler can from a/an ()
To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()