燃气在燃烧过程中，燃气喷离火孔的速度大于( )，火焰难以维持_爱下问搜题

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问题单项选择题

燃气在燃烧过程中，燃气喷离火孔的速度大于( )，火焰难以维持稳定，甚至熄灭，这种现象称为“脱火”。

A．燃烧速度

B．空气供给速度

C．燃气供给速度

D．反应速度

答案

参考答案：A

填空题

从下列方框中选适当句子并改为定语从句填空，注意其形式变化。

I invited some people to the party
we hired a car
Ann is wearing a dress
you're going to see a film
you had to do some work
Tom recommended a hotel to us
you lost some keys yesterday
we wanted to visit a museum

1. Have you found the keys ___?
2. Rose likes the dress ___.
3. The museum ___ was shut when we got there.
4. What's the name of the film ___?
5. Do you know some of the people ___ couldn't come?
6. The car ___ broke down after a few miles.
7. Have you finished the work ___?
8. We stayed at a hotel ___.

选择题

She told me she hadn’t enjoyed the film, but I decided to go and see it _____. [ ]

A. after all

B. in all

C. all the same

D. above all