单项选择题

On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by （）.

A.banjo feed
B.splash feed
C.gravity feed
D.pressure feed

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单项选择题

The main function of tie rods in the construction of large, low speed diesel engines is to（）.

A.stiffen the bedplate in way of the main bearings to increase the engines longitudinal strength
B.accept most of the tensile loading that results from the firing forces developed during operation
C.mount the engine frame securely to the hull to prevent shaft coupling misalignment
D.connect the crosshead solidly to the piston rod

单项选择题

The intake valves in a diesel engine are reseated by （）.

A.cam followers
B.push rods
C.combustion gases
D.valve springs

单项选择题

The outlet from an expansion tank of a closed freshwater cooling system should be piped to the （）.

A.cylinder head water outlet header
B.cylinder jacket inlet main
C.heat exchanger inlet connection
D.jacket water pump suction line