用铣削方法加工倾斜平面的方法有（）、（）和将刀具作成一定的锥度对斜面进行加工。
参考答案：工件斜置式；刀具斜置式
Charles was alone at home, with _____ looking after him. [ ]
A. someone
B. anyone
C. not one
D. no one
初级生产
