油温高时，停车前应先空转一段时间，并加大油量，然后停车。
参考答案：对
There is not many differences between the two. I really don't know ________.[ ]
A. what should I choose
B. which I should choose
C. which should I choose
D. what I should choose
成语“言笑晏晏”出自《诗经·卫风·氓》中的哪一句？
