Tuesday, October 18, 2022
问题:基准分为设计基准基准和工艺基准基准两大类;工艺基准有(),()和装配基准.
Tuesday, June 27, 2023
Thursday, April 27, 2023
问题:插床验收时应进行空运转试验,试验时间应()A、为30minB、为1hC、不少于1hD、不少于2h
Wednesday, February 21, 2024
Thursday, September 15, 2022
问题:宽刀精刨时,进给量根据()决定。A、刨刀结构和切削刃宽度B、工件加工面的形状C、工件材料D、背吃刀量
Wednesday, December 13, 2023
Monday, September 12, 2022
Friday, March 24, 2023
问题:插床验收时应进行空运转试验,试验时间应()。A、为30minB、为1hC、不少于1hD、不少于2h
Monday, September 12, 2022
Monday, September 12, 2022
Tuesday, October 18, 2022
Tuesday, March 28, 2023
Monday, January 1, 2024
Thursday, September 15, 2022
问题:插床也是利用工件和刀具作相对直线往复运动来切削加工的,它又称为立式刨床 。
Monday, December 25, 2023
Monday, December 25, 2023
Monday, January 1, 2024
问题:B6050型牛头刨床上多片离合器传动转矩的大小与摩擦片间的压力和摩擦因数有关,与片数的多少无关.
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:工件的平行面及互成直角的关联面,只需检验平行度和垂直度。
Monday, December 25, 2023