Engine: Expired / General Subjects

1. A The gearbox may be used to change the orientation of the hand wheel to the valve stem, or it may be used to reduce the turning effort, but NEVER both.
2. B The gearbox may be used to change the orientation of the hand wheel to the valve stem, or it may be used to reduce the turning effort, OR both.
3. C The gearbox is strictly used to change the orientation of the hand wheel to the valve stem. The gearbox is never used to reduce the turning effort.
4. D The gearbox is strictly used to reduce the turning effort. The gearbox is never used to change the orientation of the hand wheel to the valve stem.

Tip: press A-D to answer