Question

Fill in the blanks

1)Ventilators _____ _____ to cool a room.
2)In a thermos flask, the silvering of walls prevents loss of heat by ____ .​

Answer 1

Answer:

1)ventilators remove hot air and bring fresh cool air.

2) radiation .

hope it helps you

Answer 2

Answer:

1) Ventilators remove hot air and bring cool fresh air.

2) radiation

Explanation:

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