问题
填空题
影响积屑瘤形成的主要因素有：工件的力学性能、（）和冷却润滑条件。
答案
参考答案：切削速度
搜题请搜索小程序“爱下问搜题”
影响积屑瘤形成的主要因素有：工件的力学性能、（）和冷却润滑条件。
参考答案：切削速度
| 完形填空。 | ||||
| Nancy's hobby is collecting sharpeners. She 1 a lot of time on it after school. She has collected 2 one hundred sharpeners from different countries. They are all different 3 color and size. Nancy likes sharpeners with animal and birds on them. In this way, she learns the names of many animals and birds. She also 4 books on animals and birds from her school library. She learns 5 about them from books. Sometimes Nancy has many sharpeners of the same kind. She gives them 6 her friends. Then they give her other different sharpeners in return (作为回报). Nancy has many pen pals in many 7 . She sends them sharpeners of her country. In return, they send her sharpeners of their countries. Nancy's father also gives her sharpeners. He brings 8 home from his friend for her. Many of Nancy's friends collect 9 things. Some collect coins and others collect matchboxes or stamps. But all of them say that Nancy's collection is 10 of all.
|