the angle of oblique character is
A. 75 degree
B. 45 degree
C. 30 degree
D. 45 degree
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If the cutting plane is parallel with the base of a cone , the intersection line would be a
A. circle
B. triangle
C. rectangle
D. ellipse
The drawing scale is 1:5 and the dimension is 2000,so the true size is
A. 400
B. 10000
C. 2000
D. 3000
The code of Chinese National standard is
A. ISO
B. GB
C. Standard
D. ANSI
The size of A4 sheet is
A. 594⌧841
B. 210⌧297
C. 420⌧594
D. 297⌧420