1. When lifting a vehicle on a frame-contact hoist, place the lift pads at the specified locations and raise the vehicle about _________. Then shake it to see that it is firmly placed.
2. Bolts that attach an engine sling or engine stand adapter to the block should enter the block at least _________ times the diameter of the bolt.
3. When moving an engine that is hanging from an engine _________, be sure that the engine is lowered as far as possible to keep the center of gravity low.