问题
单项选择题
用卡盘装夹磨削外圆，影响圆度的主要因素是（）。
A.头架主轴的回转精度
B.工件的定位误差
C.砂轮主轴的回转精度
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
用卡盘装夹磨削外圆，影响圆度的主要因素是（）。
A.头架主轴的回转精度
B.工件的定位误差
C.砂轮主轴的回转精度
参考答案：A
A school teacher decided to let her class play a game. The teacher told each child in the class to bring along a plastic bag containing a few 16 . Each tomato will be given a name of a person that the child 17 , so the number of tomatoes that a child will put in the plastic bag will depend on the number of people the child hates. So when the day came, every 18 brought some tomatoes. Some had two; some three while some up to five tomatoes. The teacher then told the children to 19 with them the tomatoes in the plastic 20 wherever they go. Days after days passed by, and the children started to complain due to the 21 smell let out by the rotten tomatoes. Besides, those having more tomatoes had to carry 22 bags. After 1 week, the children were relieved because the game had finally ended. The teacher asked: “How did you 23 while carrying the tomatoes with you for 1 24 ?” The children let out their frustrations and started 25 of the trouble that they had to go through having to carry the heavy and 26 tomatoes wherever they go. Then the teacher told them the hidden meaning behind the 27 . “This is exactly the 28 when you carry your hatred(憎恨) for somebody inside your heart. The unpleasant smell of hatred will pollute your 29 and you will carry it with you wherever you go. If you cannot tolerate the smell of rotten tomatoes for just 1 week, can you imagine what is it like to have the smell of hatred in your heart for your lifetime?” So 30 others is that best attitude to take!
|