按其所能承受的载荷方向分,滚动轴承分三类:向心轴承、()、()。
参考答案:推力轴承;向心推力轴承
用所给单词的适当形式填空。
1. Mr Black enjoys_________ (swim ) very much.
2. Lily v_________ her grandma every week.
3. Go t_________Bridge Street, and you can see a new house.
4. My sister likes _________ (eat) bananas.
5. They have fun _________ (walk ) in the park.
新建文档WD6B.DOC,复制文档WD6A.DOC,正文各段落左右各缩进1.8厘米,首行 缩进0.8厘米,段后间距12磅。存储为文档WD6B.DOC。