问题
填空题
用合象水平仪测出导轨各分段示值读数后，必须采用（）和（）进行分析，得出直线度误差。
答案
参考答案：图解法、计算法
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用合象水平仪测出导轨各分段示值读数后，必须采用（）和（）进行分析，得出直线度误差。
参考答案：图解法、计算法
| 补全对话，从方框中选择适当的句子完成短文。 | |
| A: Hi, Tom. 1____ B: It was terrible. A: Why? 2____ B: It was so boring. I stayed at home and did my homework. 3____ A: What a pity! 4____ I went fishing with my family on Saturday. And we had a big fish dinner in the evening. B: 5____ What did you do on Sunday? A: I did my homework in the morning and played football with my friends in the afternoon. B: Sounds like great fun!
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