which of the following requirements for extension line is correct?
A: it should be draw by bold solid line
B: about 2 mm from the contour line
C: a bout 2 mm beyond the dimension line
D: Other lines in the drawing should not be used as the extension line.
E: about 2-3mm in length
A: it should be draw by bold solid line
B: about 2 mm from the contour line
C: a bout 2 mm beyond the dimension line
D: Other lines in the drawing should not be used as the extension line.
E: about 2-3mm in length
举一反三
- ___ shows Line 3; ___ shows Line 2; ____ shows Line 1.
- The ratio between the thickness of the thin line and the bold line is A: 4 B: 2 C: 0.5 D: 0.25
- Which of the following statements about an enjambed line is NOT true?
- The basic line thickness of the drawing refers to the thickness for the ( ) line A: thin B: semi-bold C: bold D: middle
- What line should be changed to make this code work? Paste the original line in the following box:______