问题
多项选择题
切削热是切削过程的重要物理观察之一，它对（）等有直接影响。
A.刀具磨损
B.车床寿命
C.生产率
D.工件质量
答案
参考答案：A, C, D
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切削热是切削过程的重要物理观察之一，它对（）等有直接影响。
A.刀具磨损
B.车床寿命
C.生产率
D.工件质量
参考答案：A, C, D
| 补全对话（有两项多余选项）。 | |
| A: When was the telephone invented, do you know? B: Yes, 1 A: 2 B:No,I think it was invented after the car. A: 3 B: It’s used for talking with our friends and relatives. A: 4 B:'I think the car is more useful than the telephone. It can take us everywhere we want to go. A: Would you like to buy a car some day? B: 5 | |
| |
| 1. 2. 3. 4. 5. |