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问题 单项选择题

电控柴油机控制系统中，提供对气缸的起动空气阀的启、闭进行控制，燃油喷射、排气阀的启、闭在时间和数量上进行控制的是（）。

A.气缸电子控制单元

B.公共电子控制单元

C.各缸执行器的传感器

D.WECS的辅助控制单元

答案

参考答案：A

改错题

Chengdu is a famous city with long history. Locating in the southwest of China, it is the capital city of Sichuan Province, it is called “the Land of Abundance”. It is said that Chengdu got its name over 2000 years ago and it had never changed since then. There is a large number of famous cultural sites and delicious snacks there, which have always been attraction to tourists from around the world. Tourists go not only to see the historical sites and to taste the snacks, but also because that it has beautiful scenery. A walk at the sides of the beautiful Jinjiang River will offer a feast for anyone’s eyes. In a word, Chengdu, as a famous saying goes, is a city where you don’t want to leave once you have come.
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名词解释

自然长度
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