 
			 
			MCQOPTIONS
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				| 1. | What is the error in feet for accurate levelling for principal benchmarks or for extensive surveys? | 
| A. | 0.4 M | 
| B. | 0.1 M | 
| C. | 0.05 M | 
| D. | 0.017 M | 
| Answer» D. 0.017 M | |