錾削时,操作者的眼睛应注视(),这样才能保证錾削质量。
A、錾子顶部
B、手部
C、在錾刃与工件之间
D、工件
参考答案:C
词汇。
1. Xi'an is in the west of China and Shanghai is in the e________ of China.
2. Boys and girls, you mustn't m_________ any noise in the library.
3. Here's a seat. Will you s _________ here?
4. Please turn to another c_________. I don't like this show.
5. This kind of d_________ (数码的) camera is the smallest one I have ever seen.
6. Sorry I didn't know anything about her d_________. (疾病)
7. The doctor told us not to spit in p_________ places.
8. Last night, Chinese football team was a__________ Japanese team. We beat them with the score of 2-0.
9. Chinese people eat n_________ on their birthdays.
10. T________ to your help, I've found my lost keys.
公安网计算机严禁“一机两用”