镗床上用的大孔镗削附件安装在镗床平旋盘上，可以代替镗刀杆镗孔。

The company was named Gates Hall ______ a man named James Gates.

A．in need of

B．in search of

C．in favour of

D．in memory of

线缆施工的主要工作项目和注意事项。

Woman: What do you like to do on your summer vacation

Man: I like nothing better than fishing on a hot summer day.

Question: What does the man mean().

A. He doesn’t like fishing on a hot summer day.

B. Although he likes fishing, he doesn’t want to do it on a hot summer day.

C. Fishing is his favorite pastime on a hot summer day.

D. He likes nothing, including fishing on a hot summer day.

机械运行是否平稳是变频调速系统的高速运行负载试验的项目。（）

A.正确

B.错误

简单介绍PDP/LED/LCD的优缺点。