单项选择题
Generally the gudgeon pin is fully floating in both connecting rod small end and （）.
A.the crosshead
B.the crankshaft
C.large end
D.the piston bosses
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相关考题
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Generally the function of lubrication is to form of a film of lubricant between any two surfaces that have relative （）, so that surfaces dont get touch with each other.
A.gravity
B.motion
C.ratio
D.density -
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Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.
A.compression
B.maximum
C.rated
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Fuel pump index is （）.
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B.the fuel oil contents
C.the starting speed
D.the reading at the rack
