题目内容

The engine valve train on timeopensor closes the intake valve or exhaust valve according totheoperational need of engine,and itprovides timely admission of the fresh gas mixture (gasoline engine) or air (diesel engine) charge into the cylinders and exhaust of spent gases from them.

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

Please match the abbreviations of the terms with their corresponding meanings.

The symbols/indicators on the dashboard are in different colors._____indicates a potentially serious problem or safety issue.

A. Red
B. Green
C. Blue
D. Amber

The symbols/indicators on the dashboard are in different colors._____ means that something needs to be serviced or repaired soon.

A. Red
Blue
C. Green
D. Amber

The symbols/indicators on the dashboard are in different colors._ or _is only telling you that a system is on or operating.

A. Red; green
B. Green; blue
C. Amber; red
D. Orange; yellow