Which one of the following factors does not affect the scale of the air photographs« Back to Previous Page
| A. focal length
B. flying height
C. ground elevation
D. None of these | 
| ▲ ▼ | D. None of these | 
| ▲ ▼ | D. None of these | 
| ▲ ▼ | D. None of these | 
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