What would be the best choice for window material to keep the outside – McqOptions

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1.	What would be the best choice for window material to keep the outside heat away?
A.	Single-pane glass
B.	Double-pane glass with air in between
C.	Double-pane glass with water filled in between
D.	Double-pane glass without a gap in between
Answer» C. Double-pane glass with water filled in between

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