问题:錾子后角的作用是减小后刀面与工件切削面之间的摩擦,引导錾子顺利錾削。...
Thursday, March 7, 2024
问题:将要钻穿孔时应减小钻头的进给量,否则易折断钻头或卡住钻头等。...
Sunday, June 11, 2023
Thursday, March 7, 2024
Saturday, September 10, 2022
Friday, January 6, 2023
Sunday, November 12, 2023
问题:在划线工序中,找正和()两个过程是有机结合在一起的。...
Wednesday, June 14, 2023
问题:某只截面为圆柱形压缩弹簧,压缩2mm需4N的力,当压缩4mm时需施加()N的力。A、6B、8C、16...
Sunday, November 27, 2022
问题:写出下列钢的代号:45号钢是();碳8钢是();65锰是()。...
Monday, June 26, 2023
Monday, October 16, 2023
Wednesday, June 14, 2023
Monday, October 16, 2023
Thursday, March 7, 2024
问题:錾子后角的作用是减小后刀面与工件切削面之间的摩擦,引导錾子顺利錾削。...
Thursday, March 7, 2024
问题:溢流阀的作用是配合油泵等,溢出系统中多余的油液,使系统保持一定的()。A、压力B、流量C、流向D、清洁度...
Sunday, November 12, 2023
问题:工具制造厂出厂的标准麻花钻,顶角为()。A、110º±2ºB、118º±2ºC、125º±2º...
Thursday, October 13, 2022
Thursday, November 3, 2022
问题:重要铸件、锻件的毛坯划线时所用涂料为()。A、石灰水B、锌钡白C、品紫D、无水涂料...
Tuesday, September 20, 2022
Thursday, February 1, 2024
Sunday, February 12, 2023