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单选题
Turbulence is created in the cylinders of a diesel engine to （）
A
obtain injection lag
B
help mix fuel and air
C
increase combustion pressure
D
utilize higher injection pressures
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单选题Before a marine diesel engine is started the cylinders and pistons must be （）.A
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单选题During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?（）A
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考题
单选题（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.A
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A conventional engine；common rail enginesC
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ratedD
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单选题A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the （）.A
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单选题Turbulence in a diesel engine cylinder is of major importance in providing （）.A
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