问题 问答题 简答题

一辆行驶中的汽车突然出现动力不足,驾驶员检查发现,发动机怠速运转不稳、消声器发出有节奏的“嘟嘟”声,并冒黑烟。请分析什么原因?该采取什么应急措施?否则会造成什么后果?

答案

参考答案:

(1)故障原因:从故障现象分析,极有可能是某缸的点火线圈坏,或高压线坏,或火花塞间隙大,或火花塞积碳短路。

(2)在没有备件的情况下,应将该缸喷油嘴插头断开,避免无火喷油。

(3)无火喷油的后果是:未燃烧的燃油进入消音器燃烧,容易造成三元催化器损坏报废,同时造成消音器发红,发生火灾。

阅读理解

阅读短文,完成下列小题。

                                                                                                                          Mr. and Mrs. J Halstead 

                                                                                                                          5b Ashton Drive

                                                                                                                          Portsmouth 

                                                                                                                          Po57BU

                                                                                                                          Reino Unido

Dear Mum and Dad,

     Well, here I am in Peru on our South American tour. We got to Lima five days ago. We had a good

journey. It took three days by bus, but we saw lots of things on the way. We didn't do much for the first

two days, as a couple of other guys were ill. We spent most of the time on the beach. (They're OK now!)

On Wednesday we came up to the mountains, and yesterday we went to the old Inca city of Machu

Picchu and did some sightseeing. It was wonderful! We didn't have a lot of time there, but we saw

everything and I took lots of photos. And we're off to Bolivia tomorrow!

      Hope you're well. Did you get my card from Colombia? 

                                                                                                                                                   Love

                                                                                                                                                   Matt

1. Mr. Halstead is Matt's ________.

2. Matt got to ________ five days ago.

3. Matt didn't do much for the first two days because ________.

4. Where did Matt spend three days?

    _________________________________________________.

5. Wherewill they go tomorrow?

    _________________________________________________.

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