Sunday, September 11, 2022
问题:平衡离心式水泵轴向力的方法有多种,其中常用于大型水泵的方法是哪一种()A、止推轴承法B、平衡孔法C、平衡盘法D、平衡管法...
Wednesday, January 11, 2023
问题:最能反映零件形状特征的视图称为(),它是零件图中最主要的视图。...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:用电流表测量电流时,应将电流表与被测电路连接成()方式。...
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:发生雷击时造成建筑毁坏、人畜伤亡,并可造成火灾和爆炸事故是()事...
Sunday, September 11, 2022
问题:开泵后,要检查柱活塞润滑是否良好,齿轮箱润滑油压力是否在()Mp...
Sunday, September 11, 2022
问题:在立式除油罐中,油层厚度一般控制在(),油粒上浮的终点在油层的底面。A、0.5~1.0mB、1.0~2.0mC、1.5~2.0mD、2.0~3.0m...
Saturday, October 1, 2022
问题:说明机器或部件性能和装配、调整、试验等所必须满足的技术条件称为(...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:变压器型号SJL560/10中数字”10”表示()....
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:QHSE管理体系审核评价有审核、()和自我评定三种方法。A、内审B、外审C、评审D、评价...
Saturday, June 29, 2024
问题:柱塞泵是依靠柱塞在缸体内的往复运动,使()产生变化,来实现吸人和...
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022