Work and heat transfer are important for changing the internal energy of a body________ Yes, please reply,

Work and heat transfer are important for changing the internal energy of a body________ Yes, please reply,

It's equivalent
Please accept, thank you!

The internal energy can be directly utilized by enhancing heat transfer, but sometimes the internal energy can be prevented from transferring through heat transfer
Internal energy can be directly utilized by enhancing heat transfer, but sometimes internal energy transfer can be prevented by heat transfer! (please give two examples each)

The hot water bag is used for heating in winter, and the pot is used for cooking. This is to use the handle of the heat preservation cup to prevent heat transfer