问题
单项选择题
滚动轴承的润滑脂填充量一般加到轴承空间空隙容量的（）
A、20%-30%
B、30%-40%
C、40%-50%
D、50%-60%
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
滚动轴承的润滑脂填充量一般加到轴承空间空隙容量的（）
A、20%-30%
B、30%-40%
C、40%-50%
D、50%-60%
参考答案：B
When I entered the classroom, our teacher announced we were going to have a math test. I looked at the paper full of what looked like hieroglyphs (象形文字) to me and began to . I did my best that I could, and then left my to put my paper in a pile (摞) on the front desk with a sigh (叹息). I returned and then an idea came to my mind. I checked where the teacher was I made my move. She was walking in the of the room with hands behind her back. I went back to the pile of test papers that already handed in and when I picked up my paper I also got the paper below it. When I looked at the paper I had taken, I discovered it was the work of the girl in our class, I copied her answers to my paper. The next day when I got back my paper, I was to see an “F” on it. After class I went to the girl and said to her, “That math test was difficult and I it. I guess we need to study more.” Her reply was, “Not me, I got every question right and got an ‘A’ ”. The teacher knew about it. She didn’t blame me in front of the class and me to keep my dignity (尊严). I made a to myself never to cheat (作弊) again. I would remember to always be honest in the things I do.
|