问题
判断题
标准直齿圆柱齿轮正确啮合条件是齿数相同。（）
答案
参考答案：错
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标准直齿圆柱齿轮正确啮合条件是齿数相同。（）
参考答案：错
| 阅读理解 | |
| |
| 1. It's Friday afternoon. You can go to . | |
| A. visit the museum B. play soccer C. play baseball D. read stories | |
| 2. If children want to watch new movies, they should go to . | |
| A .19 Yangtze Road B. 59 North Street C. 26 Green Street D. 99 Brick Road | |
| 3. If you call 66387901,you can | |
| A. ask for some hotel information B. order fast food in a restaurant C. have a good story time D. do some shopping | |
| 4. Lily's father is ill. She should call | |
| A. 800-120-9847 B. 69001354 C. 68787451 D. 71038993 | |
| 5. You can't get any information about from the two notices. | |
| A. looking for a hotel B. going swimming C. eating fast food D. taking a taxi |
缺失，义齿设计：基牙
，弯制卡环，塑料基托连接，义齿蜡型采用混装法装盒