Which of the following statements is correct concerning heat transfer?（）<br>A:Heat is given off from a high temperature region known as a heat sink<br>B:Heat transfer rate is affected most by the size of the heat sink involved<br>C:Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink<br>D:Heat transfer by radiation will occur only by mass motion of a fluid substance

Which of the following statements is correct concerning heat transfer?（）
A:Heat is given off from a high temperature region known as a heat sink
B:Heat transfer rate is affected most by the size of the heat sink involved
C:Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink
D:Heat transfer by radiation will occur only by mass motion of a fluid substance

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