Technician A says that after refinishing a 45° valve seat, a 30° angle should be used to position the valve seat on the valve face. Technician B says that before a valve guide is repaired, the valve seat should always be ground. Who is right? a. Technician A only
b. Technician B only
c. Both A and B
d. Neither A nor B

Plz 40 points what are raster vectors? a bitmap image a vector file a type of printing press a small projector

Technician a says that if a valve is open when a piston rises to the very top of a cylinder, the piston may actually strike the valve head and cause serious engine damage. technician b says if the camshaft is located in the engine block, then the engine is called an overhead valve engine, ohv engine, or an in-block camshaft. who is right? a. b only b. both a and b c. a only d. neither a nor b

All of the following are characteristics that must be contained in any knowledge representation scheme except