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
单项选择题 The main function of tie rods in the construction of large, low speed diesel engines is to（）.
单项选择题 The intake valves in a diesel engine are reseated by （）.
单项选择题 The outlet from an expansion tank of a closed freshwater cooling system should be piped to the （）.
