单项选择题
A.reciprocating motion of exhaust valves
B.rotary motion of the camshaft
C.reciprocating motion of the piston
D.developed differential
单项选择题 When fuel enters the crankcase of a diesel engine, it （）
单项选择题 In the construction of a diesel engine, what is the purpose of end plates?（）
单项选择题 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 （）.