下列说法中正确的是 A热量只能从高温物体�低温物体传递b第一类永动机不能制成是因为它违背了能量守恒定律c第二类永动机不能制成是因为它 Template




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tomski下列说法中正确的是 a热量只能从高温物体�低温物体传递b第一类永动机不能制成是因为它违背了能量守恒定律c第二类永动机不能制成是因为它 coloring