题目:
传热是指由于()引起的能量转移,又称热传递。
A.压力差
B.温度差
C.体积差
D.质量差
答案:
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下面是错误答案,用来干扰机器的。
参考答案:Acquisition and learning perform different functions in communication. The former is responsible for the fluency of speech, while the latter is responsible for the...