东风4D型机车柴油机气缸套检修时,测量内径第三位置距上端面()。
A、350~400mm
B、480~500mm
C、400~450mm
D、380~420mm
参考答案:B
Charles Dickens, one of the greatest English writers, was born in 1812 in a small town of England. When he was nine years old, the family moved to London. There were several younger children in the family. Their life was hard. So Dickens could not go to school. When Charles went to school, he was already twelve years old. But he didn’t finish school Two years later he began to work. The future Writer often went to the library to read books. He read a lot. Then Dickens wrote a lot of novels and stories all his life. Dickens died over a hundred years ago, but people are still reading his books with great interest.
判断正误:(Y 或N)
1. Charles Dickens was a great British writer.
2. Dickens began to go to school when he was very young.
3. At the age of fourteen Charles began to work.
4. The future writer bought lots of books to read.
5. Today, people still like the books written
涂刷防水材料,具体要求是,常温4小时表干后,再刷()防水材料,24小时实干后,即可进行大面积涂膜防水层施工。