Which of the statements listed concerning heat transfer is correct?（）<br>A:Heat is always transferred at a constant rate<br>B:Heat transfer rate increases as temperature difference increases<br>C:The rate of heat transfer is not affected by temperature difference<br>D:The high temperature region is known as a heat sink

Which of the statements listed concerning heat transfer is correct?（）
A:Heat is always transferred at a constant rate
B:Heat transfer rate increases as temperature difference increases
C:The rate of heat transfer is not affected by temperature difference
D:The high temperature region is known as a heat sink

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