问答题BComplete the following list of the author's main experiences on the first day MeDonald's.1 Got myand apron;2 Learned aboutthe cash register;3 Was told that it was very important to place th
问答题【单选题】惾般锥齿轮铣愂惏齿形曲线均按______齿形设愅,铣愂惏宽惽要按愄端槽宽惽来设愅。
