Question

bottle jacks use hydraulic forces to operate. they usually have greater lift capacity than most scissor jacks. most heavy vehicles include a bottle jack with the spare tire as standard equipment. floor jacks are hydraulically operated and are commonly found in automotive repair shops. they offer improved accessibility to vehicle lifting points and require less effort to operate. they are usually more expensive and less portable than a scissor or bottle jack. warning! never position your body under a vehicle supported only by a jack. if the jack falls, you could be easily crushed. always support the weight of the vehicle with jack stands rated to support the vehicle weight and test to ensure the vehicle is safely supported by gently rocking it before going under the vehicle. never use \home made\ jack stands or support the weight of the vehicle with only wood or concrete blocks that could split or crumble. using the right jack for the job is always best to accomplish lifting. which of the following are safe practices? never use a scissor jack from one car to lift another car of different make and model. wood or concrete blocks are suitable alternatives to jack stands. always support the weight of a vehicle with properly rated jack stands. \home made\ jack stands are safe to use as long as they appear sturdy. you have now correctly assessed 3 of the 4 statements.

Explanation:

The text warns against using wood or concrete blocks and "home - made" jack stands. It emphasizes using properly rated jack stands. There is no mention of not using a scissor jack from one car on another as a safety issue in the provided text.

Answer:

Always support the weight of a vehicle with properly rated jack stands.