怠速法是在怠速行驶时检测排气中的（）浓度进行检测。 A.CO B._爱下问搜题

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问题多项选择题

怠速法是在怠速行驶时检测排气中的（）浓度进行检测。

A.CO

B.H₂O

C.CO₂

D.CH₄

E.HC

答案

参考答案：A, E

选择题

Not until I arrived home _____ my wallet lost. [ ]

A. did I found

B. did I find

C. that I didn't I find

D. didn't I find

问答题简答题

消费争议的解决途径有哪些？