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
Monday, April 24, 2023
问题:脱碳层深度取决于什么因素?()A、炉内气氛B、钢坯厚度C、炉内温度D、高温下保温时间
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:属于热钢处理方法有()。A、加热B、正火C、退火D、酸洗
Sunday, September 11, 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
问题:环形炉用于管坯穿孔前(),提高钢的朔性,降低变形抗力。
Wednesday, October 18, 2023
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
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
Thursday, September 22, 2022
Monday, March 11, 2024
Monday, April 24, 2023
Sunday, September 11, 2022
Thursday, September 22, 2022
Sunday, September 11, 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
Wednesday, October 18, 2023
问题:空气中允许的CO量不应超过()。A、0.01%B、0.02%C、0.03%D、0.04%
Saturday, August 10, 2024