问题
单项选择题
柴油机排烟呈白色其原因是（）。
A.气缸中有滑油燃烧
B.燃油雾化不良
C.气缸中有水
D.后燃
答案
参考答案：C
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柴油机排烟呈白色其原因是（）。
A.气缸中有滑油燃烧
B.燃油雾化不良
C.气缸中有水
D.后燃
参考答案：C
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| After I had spent a week-with my English family, I 1 began to understand their English a little better. It's very different from what I learned at school! Students in my group are from different cities of Britain and their dialects (方言) are 2 too! Some of their accents (方言) are quite strong 3 they also have their own words and expressions. But it's not the 4 that's different and surprising. Before I came to England I had thought that fish and chips were eaten every day. That's quite 5 ! I get rather mad now when I hear all the foolish words about typical (传统的) English food. I had expected to 6 "London fog". Do you remember our texts 7 it? We had no idea that most of this "thick fog" disappeared many years ago when people stopped using coal in their homes. But the idea to speak about weather was very 8 . The weather in London is really changeable. What is ordinary for all British is that they follow traditions. Probably Britain has more 9 signs of its past than many other countries. And people have always been 10 of having ancient buildings in capitals, big cities and the countryside. | ||
| ( )1. A. quickly ( )2. A. the same ( )3. A. but ( )4. A. school ( )5. A. wrong ( )6. A. find ( )7. A. of ( )8. A. useless ( )9. A. alive ( )10. A. afraid | B. hardly B. different B. and B. family B. right B. notice B. for B. helpful B. live B. sure | C. slowly C. surprising C. though C. language C. impossible C. see C. about C. trouble C. living C. proud |