(2012湖北黄冈,第20题)如图是某物质加热时温度随时间变化的图象

 (2012湖北黄冈,第20)如图是某物质加热时温度随时间变化的图象。下列对图象的分析正确的是

A.该物质一定是晶体

BT2一定是物质的沸点

C0t1时间内物质的分子热运动加剧

Dt1t2时间内物质的温度不变内能不变

答案

C

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