Saturday, November 11, 2023
Saturday, April 6, 2024
问题:在视图上标注物体尺寸的基本要求是()。A、数值、单位B、齐全、清晰C、数值、齐全D、单位、清晰
Saturday, September 17, 2022
问题:液压系统中可用于安全保护的液压元件是()A、减压阀B、顺序阀C、溢流阀D、单向阀
Friday, November 15, 2024
问题:对于一渐开线标准圆柱齿轮,其模数越大,则()。A、分度圆越大B、压力角越大C、齿根高越小D、齿顶高越小
Saturday, September 17, 2022
Saturday, November 11, 2023
问题:气缸垫的作用是()A、密闭气缸与气缸盖的结合面B、保证气缸和燃烧室的密封C、密封燃烧室D、防止气缸盖螺栓松动
Saturday, September 17, 2022
Saturday, April 6, 2024
Sunday, October 15, 2023
问题:发动机在启动前,应检查机油在油尺"H""L"之间才可启动。
Thursday, April 6, 2023
Saturday, September 17, 2022
问题:D85—18推土机的变速系统除装有调压阀外,还安装有减压阀,是专为()设置的。
Saturday, September 17, 2022
问题:控制油液的方向控制阀,一般包括()类。A、多路阀B、单向阀C、换向阀D、减压阀
Monday, September 30, 2024
问题:液压系统的辅助元件主要有()。A、滤油器B、油箱C、油管D、油泵
Saturday, September 17, 2022
问题:()零件的可焊性最好。A、低碳钢B、中碳钢C、高碳钢D、铸铁
Thursday, December 19, 2024
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Sunday, October 1, 2023
Saturday, September 17, 2022