【简答题】影响冲裁件尺寸精度的因素有两大方面,一是 ,二是冲裁结束后冲裁件相对于 尺寸的偏差。影响冲裁件尺寸精度的因素有 、材料的 、工件的 、材料的 等,其中 起主导作用。
【简答题】日本人很风行祝寿,而且颇有趣。日本人到了___________岁时祝贺“米寿”?
【简答题】日本人很风行祝寿,而且颇有趣。日本人到了多大年纪时祝贺“米寿”?
【判断题】The way to obtain the regression for a new instance from the k nearest neighbors is to calculate the average value of k neighbors.
【单选题】The average value of 1/r for a 1s electron in the hydrogen atom is ( )
【单选题】The average value of each lost relationship across all countries surveyed is ( ) per year.