题目内容
(请给出正确答案)
[主观题]
What is the purpose of the intake/exhaust valves in a diesel engine ________.A.They regula
What is the purpose of the intake/exhaust valves in a diesel engine ________.
A.They regulate the combustion cycle
B.They supply cooling water
C.They synchronize the ignition spark
D.They supply and regulate the lubricant flow
提问人:网友liao044
发布时间:2022-01-06