问题:减速器的种类按照齿轮形状可分为()圆锥齿轮减速器和圆柱-圆锥齿轮...
Friday, September 16, 2022
问题:有充气胶囊的蓄能器,如有条件每年必须更换胶囊;如无条件()检修周...
Monday, September 12, 2022
Monday, September 12, 2022
问题:呼吸阀内应安装静电输出装置,确保()保持等电位。...
Friday, September 16, 2022
问题:校正反应器内、外筒的同轴度时,其最大允许偏差不得超过()。...
Friday, September 16, 2022
问题:GB151规定,符合本规定要求的奥氏体不锈钢焊接钢管可用作换热管...
Monday, September 12, 2022
Saturday, September 17, 2022
问题:填料压盖断裂多因压紧填料时用力不均匀,或压盖()。压紧填料,要(...
Monday, September 12, 2022
问题:加热炉检修内容应根据加热炉损坏程度,修理或更换()、弯管、管板和...
Friday, September 16, 2022
问题:往复压缩机活塞环的对口间隙是根据活塞环周长在工作温度下的()确定...
Monday, September 12, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Monday, September 12, 2022
Saturday, March 2, 2024
问题:O形圈的永久变形和弹性消失的重要原因是()。A、安装精度B、压缩量或拉伸量大C、工作温度高D、工作压力高...
Saturday, October 22, 2022
问题:透平轴功率的变化可以由()反映出来,()增加,透平轴功率(),反...
Monday, September 12, 2022
Friday, September 16, 2022
问题:换热管的排列形式分为()排列,转角正三角形排列,()排列,转角正...
Friday, September 16, 2022
问题:普通灰铸铁、可锻铸铁、球墨铸铁及蠕墨铸铁中石墨的形态分别为()、...
Monday, September 12, 2022