If registration numbers are to be applied to an air-craft with a letter height of 12 inches, what is the minimum space required for the registration mark N1683C?
Note:
2/3 x height = character width.
1/6 x height = width for 1.
1/4 x 2/3 height = spacing.
1/6 x height = stroke or line width.
选项：
A:52 inches.
B:48 inches.
C:57 inches.
发布时间：2024-04-20 10:30:29
C:
D:
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B:
