题目内容
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A．the extra weight required for the diesel reduction gearing
B．a minimum speed for the engines that limits the minimum speed of the vessel
C．the higher fuel consumption per SHP
D．the low efficiency of the system when a controllable pitch propeller is used
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A. the extra weight required for the diesel reduction gearing
B. a minimum speed for the engines that limits the minimum speed of the vessel
C. the higher fuel consumption per SHP
D. the low efficiency of the system when a controllable pitch propeller is used
According to the passage，the major disadvantage of newspapers in its_______
A．high cost
B．lack of changes
C．slow speed
D．lack of interaction
A.Lubrication to the defective cylinder should be increased
B.Cooling water temperature to the engine should be increased
C.Only the turbocharger speed should be reduced
D.Engine speed should be reduced
A disadvantage of a two-stroke/cycle diesel engine is_____________.
A.more power strokes per revolution
B.the use of scavenge air
C.more complicated valve gear
D.higher working temperature of the piston and cylinder
A.increasing the quantity of starting air
B.increasing the lube oil pressure
C.heating the engine fuel supply
D.heating the engine coolant
A.cylinder heads
B.exhaust valves
C.scavenging air
D.injectors
A disadvantage of a four-stroke/cycle diesel engine is ________.
A.higher working temperature of piston and cylinder
B.the use of scavenge ports
C.fewer power strokes per revolution of the crankshaft
D.part of the fuel is burned as the piston is moving away from top dead center
The major disadvantage of a bar chart is:
A.Lack of time-phasing.
B.Cannot be related to calendar dates.
C.does not show activity interrelationships.
D.Cannot be related to manpower planning.
E.Cannot be related to cost estimates.
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