使用各种钻床前必须进行()。A、负荷试车B、空转试车C、切削试验D、几何精度检查...
Saturday, October 14, 2023
气动工具通常30—40天需要对空气压缩机和油水分离器进行定期排水、除杂质保养,以保证进入工具的空气()。A、与油水混合成比例B、洁净而干燥C、压力合适D、保持合适的湿度...
Saturday, February 4, 2023
卧式万能铣床()一端装有吊架,用以支承刀杆,以减少刀杆的弯曲与振...
Sunday, September 11, 2022
普通机床导轨刮削接触精度为()点25m/m×25m/m2。A、2-5B、5-8C、8-12D、12-16...
Sunday, November 19, 2023
Thursday, September 15, 2022
Tuesday, September 13, 2022
夹具中布置六个支承点,工件的六个自由度就能完全被限制,这时工件的...
Sunday, September 11, 2022
Sunday, September 11, 2022
Thursday, September 15, 2022
Sunday, September 11, 2022
Tuesday, September 13, 2022
对定销定位接触不良,会加快对定销和分度孔表面磨损,降低()精度。...
Sunday, September 11, 2022
Thursday, September 15, 2022
Sunday, September 11, 2022
镀铜法是在凸模刃口至距刃口()mm这段工件表面上镀一层铜。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Sunday, September 11, 2022
在实际生产中,若现有油石的硬度偏低时,可以用()来浸润,以提高其...
Thursday, September 15, 2022
平尺测量法中,支承工形平尺的两个支承点距两端的距离为平尺全长的(...
Thursday, September 15, 2022
Sunday, September 11, 2022