For diesel engine piston cooling, lubricat
题型:单项选择题
问题:
For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an ().
A.oil spray
B.oil bath
C.oil control rings
D.drilled passage through the camshaft
For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an ().
A.oil spray
B.oil bath
C.oil control rings
D.drilled passage through the camshaft