Engine 2014: General Subjects

1. A be completely opened with the handwheel locked hard at the  end of the last opening turn
2. B be opened to the end of the last opening turn, then rotate  the handwheel in the closing direction by approximately 1/4 of a turn
3. C be opened by 1/2 of the total number of turns available from full closed to full open
4. D be opened as much as needed, regardless of how little the gate has been moved from its seat

Tip: press A-D to answer