Which of the following lines are used as dimension lines， extension lines， leader lines， construction lines， section lines and projection lines？（ ）
A: Thin phantom lines
B: Thin solid lines
C: Thin center lines
D: Wavy lines
A: Thin phantom lines
B: Thin solid lines
C: Thin center lines
D: Wavy lines
举一反三
- Contour lines are thin curved lines that appear to wrap around certain areas in the topographic maps. True or false?
- Construction lines are the only lines on a drawing which should be light.
- How many lines does a product description usually have? A: 1-2 lines B: 4-6 lines C: 7-9 lines D: 10-12 lines
- Mooring lines include head lines, stern lines, spring lines and breast lines.? 正确|错误
- Aredimension lines thicker, thinner, or the same thickness as extension lines?