Saturday, February 10, 2024
Thursday, August 10, 2023
Thursday, March 7, 2024
Friday, April 12, 2024
问题:碳素结构钢Q235中的“Q”表示()A、抗拉强度B、屈服强度C、断裂强度
Thursday, September 15, 2022
Wednesday, April 3, 2024
Saturday, February 10, 2024
Monday, October 2, 2023
问题:切头剪在调整剪刃侧隙和上刀架滑动间隙及换剪刃时,必须装上(),作好安全防护,保证剪切机不能动作。
Tuesday, January 16, 2024
问题:完好的圆盘剪刀刃在线生产过程中出现带钢切边不良或翘曲现象时应该如何处理()A、更换刀片B、减小上下刀刃间隙C、合理调整上下刀刃间隙及重叠量
Friday, March 15, 2024
问题:当一种金属进行塑性变形时,受到外力为1000N,受力的面积为200mm2,此时金属产生内力,其应力应为()。A、5PaB、50PaC、5MPa
Thursday, March 7, 2024
Tuesday, October 3, 2023
问题:()[CPR]是紧急救护中抢救心跳、呼吸骤停的伤员最重要的措施。
Friday, March 10, 2023
问题:设联锁条件是用于()和(),提高自动化程度,减轻体力强度。
Friday, April 12, 2024
问题:碳钢再结晶退火的温度一般为多少?退火是内部组织变化有那几个过程?
Friday, January 26, 2024
Friday, November 11, 2022
Saturday, December 9, 2023
Saturday, August 12, 2023
问题:EPC对中系统的用途是控制卷取机的边缘浮动跟踪,使卷取机将带卷()。
Wednesday, April 3, 2024
Friday, December 23, 2022