含碳量在0.25%~0.60%之间的碳素钢称为()A、低碳钢B、中碳钢C、中合金钢D、高碳钢...
Sunday, July 23, 2023
Sunday, September 11, 2022
Saturday, September 17, 2022
按冶炼时脱氧程度分类,钢分为()、镇静钢、半镇静钢、特殊镇静钢。...
Sunday, September 11, 2022
Friday, February 17, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
冷轧板材生产的中间退火的目的主要是()。A、改善板型不良B、消除加工硬化C、获得良好的组织性能...
Friday, May 12, 2023
试样拉断后,标距的增长量与原始标距长度的百分比我们称为()。...
Wednesday, June 14, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
按钢中非金属夹杂物的化学成份来分有()、硫化物和碳化物。...
Saturday, September 17, 2022
轧制终了的钢材在大气中冷却的方法称为()。A、强制冷却B、缓冷C、自然冷却...
Saturday, April 6, 2024
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
受进货检验设备和手段的限制,采购产品、外协产品的使用性能无法在进...
Saturday, September 17, 2022
影响晶粒长大的因素有:()。A、加热温度B、保温时间C、加热速度D、化学成分...
Saturday, December 23, 2023
在耐火制品经尺寸和外观检验后的砖垛上取样()块时,可以有一块不低...
Sunday, September 11, 2022
纠正措施是生产组织为消除产品不合格发生的()所采取的措施。...
Sunday, September 11, 2022