Saturday, September 17, 2022
冲孔连皮应()A、厚些好B、薄些好C、按锻件最大厚度决定D、按孔径决定...
Sunday, January 21, 2024
造型时,舂砂过紧影响砂型的进气性和退让性,易在铸件中产生何种缺陷...
Friday, September 16, 2022
在焊接厚度相同的情况下,与平焊相比,横焊的焊条直径小,焊接电流小...
Friday, September 16, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Friday, September 16, 2022
Friday, September 16, 2022
精车钢件时,刀具材料应选用()A、YT15B、YG8C、YT5...
Friday, December 23, 2022
Tuesday, September 13, 2022
线切割加工中操作主机包括装电极丝、装夹工件、按顺序启动各种开关。...
Friday, September 16, 2022
用假箱造型时不必()就可以与挖砂造型相同,操作简便,提高了()。...
Friday, September 16, 2022
钳工加工内螺纹采用的方法称(),钳工加工外螺纹使用的工具是()。...
Sunday, September 11, 2022
Friday, September 16, 2022
如需5件45钢的主轴箱传动齿轮,其合理的毛坯制造方法是()。...
Friday, September 16, 2022
Tuesday, September 13, 2022
数控铣床加工操作的合理步骤是()。 ①开机和回参考点 ②输入程...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Friday, September 16, 2022