问题
问答题 简答题
轴封温度过高的危害?
答案
参考答案:
1)轴封齿变形;
2)轴颈局部加热,引起汽缸正胀差增大;
3)使热套部件松动。
轴封温度过高的危害?
参考答案:
1)轴封齿变形;
2)轴颈局部加热,引起汽缸正胀差增大;
3)使热套部件松动。
先阅读短文,然后用下面方框中所给的单词或短语填空,使全文在逻辑上正确。(提示:选项中 有一个是多余的。) | |
didn't 1. me. It all started when she asked me if she could copy my homework. I asked her why she wanted to do that, and she said that she had forgotten to do hers. I said I didn't think it was a good idea. I said it would start a bad 2. and she should do her own work. She got really 3. at me and said she didn't want to be my best friend any more. I said that was OK and that I was sure she would 4. it. And she did. Yesterday she told me she was 5. . She said it was much better if she did her own work. |