Computer · Surveying
Match the code of signals for direct ranging. List 1 indicates the signals by the surveyor and List 2 indicates the action by the assistant in the field: List 1 (Signals): M. Rapid sweep with the left hand N. Slow sweep with the left hand O. Left arm extended P. Left arm up and moved to left List 2 (Actions): 1. Continue to move to the left 2. Move considerably to the left 3. Plumb the rod to the left 4. Move slowly to the left 5. Fix the rod in position
- 1M - 2, N - 4, O - 1, P - 5
- 2M - 2, N - 4, O - 1, P - 3✓
- 3M - 2, N - 1, O - 5, P - 3
- 4M - 2, N - 1, O - 4, P - 5
Correct answer
M - 2, N - 4, O - 1, P - 3
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