Which of the following descriptions about the giving dimension for mechanical drawing are correct?
选项:
A:The dimension lines of linear dimensions must be parallel to the segments which are dimensioned.
B:The dimension figures of horizontal dimensions should be drawn upward above the dimension lines; those of vertical dimensions should be drawn leftward on the left of the dimension lines; and those of oblique dimensions should be drawn at upward direction and placed over the dimension lines.
C:The arrows of continuous dimensions should be drawn aligned.
D:For parallel dimensions, the larger ones should be placed outside of the smaller ones, and the distance between two parallel dimensions should be 5~10mm.
发布时间:2024-03-31 22:44:47