Sunday, February 11, 2024
问题:一、二电场仓泵的容积为()m3。A、2.5B、2C、3D、3.5...
Thursday, June 1, 2023
Tuesday, January 3, 2023
Sunday, May 14, 2023
Sunday, February 11, 2024
Friday, December 29, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:推土机干式主离合器的挠性联结块更换必须同时更换()个。A、2B、3C、4D、5...
Sunday, February 11, 2024
Sunday, February 11, 2024
问题:环绳及绳环必须经过()倍允许工作荷重的静力试验合格后方可使用。...
Tuesday, September 13, 2022
问题:在检修中,装配径向柱塞马达时,涨圈不得有损伤及棱角,两涨圈开口位...
Sunday, September 11, 2022
问题:两齿轮啮合运动,Z1=30、Z2=10,若ω1=57rad/s,则ω2为()rad/s。A、171B、10C、38D、5...
Friday, May 10, 2024
问题:斗轮堆取料机液压油系统安装后,其严密性试验的试验压力为工作压力的...
Sunday, September 11, 2022
Monday, October 24, 2022
问题:堆取料机用液压缸来控制变幅,其结构较钢丝绳变幅机构笨重。...
Monday, October 31, 2022
问题:冬季120分钟、夏季约1小时冷却后可正常使用犁形头及抓斗。...
Monday, October 24, 2022
Thursday, December 14, 2023
问题:轴向柱塞泵蝶形弹簧的紧力要求压缩弹簧()。A、0.9~1mmB、0.8~0.9mmC、0.5~0.6mmD、0.3~0.4mm...
Sunday, February 11, 2024
Monday, October 31, 2022