单选题Which of the statements listed concerning heat transfer is correct?（）AHeat is always transferred at a constant rateBHeat transfer rate increases as temperature difference increasesCThe rate of heat transfer is not affected by temperature differenceDThe high temperature region is known as a heat sink
单选题
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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