3
[Deleted]
Added 57 days ago|10/3/2023 12:11:30 AM
This answer has been added to the Weegy Knowledgebase
Deleted by
4Eian [10/3/2023 12:13:40 AM]
3
A vacuum in thermoflask prevent heat loss by conduction.
Added 57 days ago|10/3/2023 12:13:49 AM
This answer has been confirmed as correct and helpful.