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A steam pipe is to be lined with two layers of insulating materials of different thermal conductivities. For the minimum heat transfer, | |
A. | the better insulation must be put inside [Correct Answer] |
B. | the better insulation must be put outside [Wrong Answer] |
C. | one could place either insulation on either side [Wrong Answer] |
D. | one should take into account the steam temperature before deciding as to which insulation is put where [Wrong Answer] |