Monday, September 12, 2022
问题:压铸螺纹允许有不大于()毫米的错扣,螺纹头三扣不允许有欠铸和断扣。A、0.05B、0.1C、0.15D、0.2
Monday, September 12, 2022
Wednesday, November 29, 2023
Wednesday, October 25, 2023
问题:压铸合金选用应考虑铸件()及工作环境状态。A、酸碱B、压力C、密闭性D、受力状态
Sunday, September 11, 2022
问题:压铸模在生产时合金温度越高越好,这样合金不容易在料筒里凝固。()
Friday, July 26, 2024
Saturday, February 3, 2024
问题:什么是推出机构?其由哪些部分组成?推杆推出机构的设计重点是什么?
Thursday, January 11, 2024
Friday, October 28, 2022
问题:在模具出现卡件时,严禁采用将模具整体加热方式使铝熔化来解决卡件。()
Sunday, December 22, 2024
Saturday, March 9, 2024
问题:()是将压铸三要素进行有机组合和运用的过程。A、压铸合金B、压铸模C、压铸机D、压铸工艺
Friday, October 28, 2022
Monday, September 30, 2024
问题:直浇道作用之一是()A、将金属液引入横浇道B、将金属液引入模具C、传递静压力D、改变金属液方向
Wednesday, December 4, 2024
Sunday, September 11, 2022
问题:冷压室压铸机的压室与熔炉是分开的,其压室的工作条件比热压室的好。()
Friday, October 28, 2022
问题:()可避免一般充填中所发生的裹气和涡流现象。A、(1)一级压射B、(2)二级压射C、(3)三级压射
Thursday, June 8, 2023
Saturday, July 27, 2024
Tuesday, June 27, 2023
Saturday, July 27, 2024