问题:钢号1Cr18Ni9中各符号和数字的含义是什么?...
Thursday, September 22, 2022
问题:电雷管要查看脚线()A、连接是否牢固B、管壳无熏皮C、变形、沙眼D、锈迹、污垢...
Thursday, September 22, 2022
问题:仪表的读数An和被测量物的真实值Ao之间的差值称()。A、绝对误差B、相对误差C、仪表误差D、人工误差...
Thursday, September 22, 2022
Thursday, September 22, 2022
Sunday, September 11, 2022
Thursday, September 11, 2025
问题:发生火灾时,正确应变措施是:发出警报,疏散,在安全情况下设法扑救。...
Saturday, February 17, 2024
Thursday, September 22, 2022
Tuesday, September 2, 2025
Thursday, September 22, 2022
问题:混合煤气的发热值()高炉煤气的发热值。A、大于B、小于C、等于D、接近于...
Thursday, November 2, 2023
问题:正在运转设备的转动部位禁止清扫、加油及故障处理。...
Sunday, September 11, 2022
Sunday, January 8, 2023
Monday, September 12, 2022
Monday, July 15, 2024
问题:大、中、小修施工和临时性工作首先制定()。A、人员安排B、工作计划C、安全可靠措施...
Thursday, September 22, 2022
问题:耐火材料的物理性能包括()。A、体积密度B、气孔率C、真密度D、热膨胀性...
Thursday, September 22, 2022
Sunday, September 11, 2022
问题:属于间歇式加热炉的是()。A、井式炉B、罩式炉C、坑式炉D、台车炉...
Thursday, September 22, 2022
Wednesday, October 18, 2023