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单项选择题
A.cleaning fuel oil, lubricating oil and seawater filter
B.reducing fuel feeding of the main engine appropriately or reducing the pitch angle of propeller
C.using low sea chest
D.closing the skylight and the ventilation opening, which doesn’t affect the normal work of equipments
单项选择题
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
单项选择题
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
单项选择题
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
单项选择题
A.reduce fuel feeding
B.increase fuel feeding
C.keep original fuel feeding
D.be overspeed
单项选择题
A.overspeed;overload
B.overload;overspeed
C.over torque;overspeed
D.low mechanical efficiency;overload
单项选择题
A.power of main engine
B.turbine rotation speed
C.speed of main engine
D.exhaust temperature
单项选择题
A.Ⅰ + Ⅱ
B.Ⅰ ~ Ⅲ
C.Ⅰ ~ Ⅳ
D.Ⅰ + Ⅱ + Ⅳ
单项选择题
A.overspeed;overload
B.overload;overspeed
C.over mechanical load;over thermal load
D.over torque;overspeed
单项选择题
A.to work as overload characteristic
B.overspeed
C.over mechanical load only
D.over thermal load only