问题:在CAD使用中,为了方便定义图形通常采用不同坐标系,在以下坐标系中,坐标系的定义域是连续且无界的是()A、世界坐标系B、显示器坐标系C、规格化设备坐标系D、绘图仪坐标系
Thursday, June 6, 2024
Thursday, August 10, 2023
Saturday, February 3, 2024
Tuesday, April 4, 2023
Thursday, June 6, 2024
Saturday, February 3, 2024
Saturday, August 3, 2024
Monday, August 21, 2023
问题:平面问题的弹性矩阵与材料的()A、弹性模量有关,泊松比无关B、弹性模量无关,泊松比有关C、弹性模量和泊松比都无关D、弹性模量和泊松比都有关
Monday, October 2, 2023
Thursday, June 6, 2024
问题:某系统由3个子系统串联组成,若该系统的可靠度为0.729,且每个子系统的可靠度相等,则该子系统的可靠度为()A、0.8B、0.9C、0.95D、1
Saturday, September 28, 2024
Saturday, February 3, 2024
问题:在有限元分析中,对结构划分的单元数是否越多越好?为什么?
Saturday, September 28, 2024
Saturday, February 3, 2024
Monday, July 29, 2024
Monday, July 29, 2024
Wednesday, November 1, 2023
Saturday, September 10, 2022
Monday, October 23, 2023
问题:串联系统的失效模式大多服从()A、正态分布B、对数正态分布C、指数分布D、威布尔分布
Monday, August 21, 2023