【判断题】对于孔、轴,实效尺寸都等于最大实体尺寸与几何公差之和。
【判断题】对于孔、轴,最大实体实效尺寸都等于最大实体尺寸与形位公差之和。
【单选题】Directions: Choose the right one from the four choices marked A, B, C or D. The risk of DVT and PE were significantly _____, and were highest in the first two weeks, after urinary tract infec...
【单选题】The risk of DVT and PE were significantly _____, and were highest in the first two weeks, after urinary tract infection.
【判断题】无障碍设计坡道每段最大升高为 750mm ,最大水平长度为 9000mm。
【判断题】对于孔、轴,实效尺寸都等于最大实体尺寸与形位公差之和。