Question 65, Morning Session of Professional Knowledge, 2012
Thread Content
65. Regarding the thermal conductivity, which of the following statements is correct? A The same material has the same thermal conductivity under any circumstances. B Metal materials have the highest thermal conductivity, followed by liquids, with gases having the lowest. C The thermal conductivity of metal materials is related to temperature. D Gases hardly conduct heat, so their contribution can be ignored. Options B and C are correct. In option D, under high temperature and pressure conditions, the heat conduction of the gas cannot be ignored, right?
I agree with you as well; I’m not sure why the answer is BCD. How did you come to consider option D?
I also think it can’t be ignored! ! !