问题:推土机、铲运机在深沟基坑作业时,其垂直边坡深度超过()时要放出安...
Saturday, September 17, 2022
问题:履带左右链节,选用材料应()。A、20MnB、40CrC、40MnD、40Mn...
Saturday, January 20, 2024
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...
Saturday, September 17, 2022
Saturday, September 17, 2022
Monday, September 12, 2022
Saturday, April 6, 2024
Saturday, September 17, 2022
Saturday, May 11, 2024
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:什么叫活塞的上死点(也称上止点)、下死点和冲程?...
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, November 11, 2023
Saturday, September 17, 2022
问题:推土机液压操纵系统中进入空气,不必排除空气。()...
Monday, June 12, 2023
问题:形位公差一共包括()项,其中形状公差()项,位置公差()项。...
Sunday, December 24, 2023
Saturday, September 17, 2022
问题:推土机的工作装置是指()。A、推土铲B、八字架C、发动机D、散热器...
Sunday, October 1, 2023
Tuesday, August 8, 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