Saturday, October 28, 2023
Wednesday, April 17, 2024
Wednesday, March 15, 2023
问题:油气式缓冲支柱主要利用气体的()吸收撞击动能,利用油液高速流过节流小孔的摩擦消耗能量(气储存和释放能量)。...
Wednesday, April 17, 2024
问题:镁、钛合金橡皮加热成形的温度:()。A、镁合金300-500°CB、镁合金300-350°CC、钛合金500-700°CD、钛合金530-700°C...
Sunday, August 27, 2023
Tuesday, March 5, 2024
Tuesday, March 5, 2024
Friday, February 16, 2024
Wednesday, January 3, 2024
Sunday, December 3, 2023
Thursday, March 7, 2024
问题:铆钉孔强化的主要目的:()。A、除去受损层B、提高挤压强度C、降低孔缘应力集中D、铆钉受力均匀...
Thursday, March 7, 2024
问题:高锁螺栓的主要特点:()。A、与孔采用动配合B、配合精度三级C、利用螺栓的过盈量与孔干涉配合D、采用严格的锁紧措施...
Sunday, August 27, 2023
问题:传动机构通常有()三种。其作用是将操纵机构的信号传送到舵面或液压助力器。...
Friday, February 16, 2024
Saturday, October 7, 2023
Friday, August 4, 2023
Thursday, June 29, 2023
Wednesday, March 15, 2023
Sunday, August 27, 2023
问题:落锤成形的实质:()。A、落锤下落冲击材料入凹模成形B、落锤打击材料变薄与变形C、落锤下落冲击力压材料贴凸、凹模成型D、落锤下落冲击力压材料贴凸模...
Tuesday, March 5, 2024