A.navigating with a low diesel engine speed
B.navigating with a stable diesel engine speed
C.increasing the efficiency of propeller
D.increasing fuel injection
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A.prevent the diesel engine surging
B.prevent governor from being damaged because of swing
C.reduce the probability of the crank shaft being torsional vibrated and resonated
D.prevent the main engine being overload or overspeed
A.the power of main engine will be reduced
B.exhaust temperature will be increased
C.the speed of the ship will be reduced
D.the propulsion characteristic of propeller will keep unchanged
A.reduce fuel feeding
B.increase fuel feeding
C.keep original fuel feeding
D.be overspeed
A.overspeed；overload
B.overload；overspeed
C.over torque；overspeed
D.low mechanical efficiency；overload
A.power of main engine
B.turbine rotation speed
C.speed of main engine
D.exhaust temperature
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