19 Exercises 练习题 1.Point out the dimension which one is incorrectly. 指出尺寸标注上的错误。 2.Dimension this drawing of components. 标注所给图形的尺寸（注R或，具体数值不注）。 3.Point out the dimension which one is incorrect and correct it. 找出尺过标注上的错漏，并改正之。 请点击题目显示其内容 19 2. Dimension this drawing of components 3. Point out the dimension which one is incorrect and correct it. 1. Point out the dimension which one is incorrectly