Saturday, September 17, 2022
Thursday, September 22, 2022
单选题柱塞式喷油泵通过滚轮体的调整螺钉或调整垫块可以()。A 改变喷油泵各分泵的供油提前角B 改变喷油泵的供油压力C 改变喷油泵的循环供油量D 改变各分泵的有效行程...
Tuesday, February 20, 2024
Tuesday, September 20, 2022
Monday, September 19, 2022
土质路堤压实施工中,加水困难时,可采用(),提高压实度。...
Thursday, September 22, 2022
Saturday, September 17, 2022
Sunday, March 12, 2023
Thursday, September 22, 2022
Monday, September 19, 2022
一般情况下,发动机机油液位不会降低,所以如果降低就说明漏油。...
Thursday, September 22, 2022
单选题与节流阀相比较,调速阀的显著特点是()。A 调节范围大B 结构简单,成本低C 流量稳定性好D 最小压差的限制较小...
Tuesday, February 20, 2024
Thursday, September 22, 2022
Monday, September 19, 2022
Saturday, September 17, 2022
土质路堤压实的目的是通过压实可以使路堤获得一定的(),提高路堤的强度和水稳定性,减小由于荷载和大气因素作用产生的变形。...
Thursday, September 22, 2022
在柴油发动机之燃料系统中,若喷油泵装配后未排除空气,则()。...
Friday, September 16, 2022
Thursday, September 22, 2022
判断题在液压系统中,控制阀的作用是使液体在管道中循环流动,是液压系统中的执行元件。A 对B 错...
Tuesday, August 8, 2023
Wednesday, September 21, 2022