问题:下列单位中那一个是力的单位()。A、N/mm2B、PaC、ND、K...
Sunday, September 17, 2023
Tuesday, September 13, 2022
问题:车螺纹时,应适当增大车刀走刀方向的()A、前角B、后角C、刀尖角...
Friday, October 6, 2023
问题:在劳动保护规定中,表示“禁止、停止”的安全色是()。A、红色B、兰色C、黄色D、绿色...
Saturday, July 15, 2023
问题:计算题:计算下列数据的平均值。 151.3,152.0,149.8,150.8,152.0...
Tuesday, October 17, 2023
问题:切削的类型有带状切削、挤裂切削、粒状切削和()切削四种。...
Saturday, December 9, 2023
Tuesday, January 31, 2023
问题:千分尺的读数精度为()。A、0.1B、0.01C、0.001D、0.0001...
Wednesday, December 13, 2023
Friday, March 15, 2024
Friday, October 6, 2023
问题:对数控机床描述错误的是()。A、适应性广B、利用率高C、生产准备时间长...
Saturday, September 2, 2023
Wednesday, December 13, 2023
Tuesday, September 13, 2022
问题:计算题:已知一锥体零件小端直径为45mm,锥体部分长度为180mm,锥度为1:30,求锥体大端直径等于多少mm?...
Wednesday, January 10, 2024
Tuesday, January 23, 2024
Tuesday, September 13, 2022
问题:计算题:由两齿轮组成的定轴系传动系统中,齿轮1为主动轮,齿轮2为从动轮,且Z1=60、Z2=90,当齿轮1的转数n1=3时,计算n2为多少?...
Thursday, February 2, 2023
问题:常见机床名称代号中“磨床”的代号为:()。A、CB、ZC、MD、B...
Wednesday, January 10, 2024
Tuesday, September 13, 2022
Thursday, March 14, 2024